'Roseanne': Johnny Galecki returns as David -- watch his adorable reunion with Darlene!

Johnny Galecki is back on Roseanne!

The Big Bang Theory star returns to the hit ABC comedy on Tuesday's episode, reprising his role as David Healy, Darlene's (Sara Gilbert) off-again beau and father of their two children, teenage daughter Harris (Emma Kenney) and younger son Mark (Ames McNamara), with the intention of fixing things after years away.

In a sneak peek from the episode, David's first appearance in the update is quite memorable. After tapping on Darlene's window to grab her attention, she's taken aback by the sight of her husband after she peels back the bedroom curtain.

"What the hell are you doing out there?!" she says, surprised. 

"I told you I was coming. I need to talk to you," he says, a bit exasperated, as Darlene opens the bedroom window for him to climb through. 

"Why are you coming in the window, anyway?" Darlene asks.

"Does your dad still live here? That's why I'm still coming through the window," David answers, before getting caught with the nostalgia bug as he refamiliarizes himself with Darlene's childhood bedroom.

23 PHOTOS
'Roseanne' revival
See Gallery
'Roseanne' revival
ROSEANNE - 'Go Cubs' - The Conners can't pay their Wi-Fi bill, so they befriend their new neighbors to use the internet for Mary to Skype with mom Geena, who is stationed in Afghanistan. Meanwhile, Dan loses an important job and D.J. admits post-military life has been hard, so they come up with a plan to make extra money, on the seventh episode of the revival of 'Roseanne,' TUESDAY, MAY 8 (8:00-8:30 p.m. EDT), on The ABC Television Network. (Adam Rose/ABC via Getty Images) SARA GILBERT, ROSEANNE BARR, ALAIN WASHNEVSKY, ANNE BEDIAN
ROSEANNE - 'No Country for Old Women' - After Beverly gets kicked out of the nursing home, Roseanne and Jackie fight over who will take care of their mother. Meanwhile, Mark's creative touch with building a birdhouse for Dan's customer is more than Dan can handle, but Darlene defends her son, on the sixth episode of the revival of 'Roseanne,' TUESDAY, MAY 1 (8:00-8:30 p.m. EDT), on The ABC Television Network. (Greg Gayne/ABC via Getty Images) ESTELLE PARSONS, LAURIE METCALF
ROSEANNE - 'Eggs Over, Not Easy' - A crucial moment for Becky's surrogacy arrangement forces her and Darlene to critically assess each other's lives. Meanwhile, an animal rescue organization rejects Jackie's application to adopt a puppy; and Roseanne makes a plan to change their mind, on the fourth episode of the revival of 'Roseanne,' TUESDAY, APRIL 10 (8:00-8:30 p.m. EDT), on The ABC Television Network. (Adam Rose/ABC via Getty Images) LAURIE METCALF, LECY GORANSON, SARAH CHALKE
ROSEANNE - 'Netflix & Pill' - After celebrating their 45th anniversary, Roseanne reveals to Dan a bigger problem with her bad knee. Meanwhile, Crystal announces her retirement as a waitress at the casino, and Becky and Darlene compete for the job which has full-time benefits, on the eighth episode of the revival of 'Roseanne,' TUESDAY, MAY 15 (8:00-8:30 p.m. EDT), on The ABC Television Network. (Adam Rose via Getty Images) ROSEANNE BARR, JOHN GOODMAN
ROSEANNE - 'Darlene v. David' - David unexpectedly shows up for Harris' birthday after being absent for years, forcing Darlene to re-examine their relationship and the rest of the family. Meanwhile, Bev temporarily moves into the Conner home after an incident at the nursing home prevents her from returning, on the fifth episode of the revival of 'Roseanne,' TUESDAY, APRIL 17 (8:00-8:30 p.m. EDT), on The ABC Television Network. (Greg Gayne via Getty Images) LECY GORANSON, SARA GILBERT
ROSEANNE - 'Go Cubs' - The Conners can't pay their Wi-Fi bill, so they befriend their new neighbors to use the internet for Mary to Skype with mom Geena, who is stationed in Afghanistan. Meanwhile, Dan loses an important job and D.J. admits post-military life has been hard, so they come up with a plan to make extra money, on the seventh episode of the revival of 'Roseanne,' TUESDAY, MAY 8 (8:00-8:30 p.m. EDT), on The ABC Television Network. (Adam Rose/ABC via Getty Images) JOHN GOODMAN, MICHAEL FISHMAN
ROSEANNE - 'Netflix & Pill' - After celebrating their 45th anniversary, Roseanne reveals to Dan a bigger problem with her bad knee. Meanwhile, Crystal announces her retirement as a waitress at the casino, and Becky and Darlene compete for the job which has full-time benefits, on the eighth episode of the revival of 'Roseanne,' TUESDAY, MAY 15 (8:00-8:30 p.m. EDT), on The ABC Television Network. (Adam Rose via Getty Images) ROSEANNE BARR
ROSEANNE - 'Go Cubs' - The Conners can't pay their Wi-Fi bill, so they befriend their new neighbors to use the internet for Mary to Skype with mom Geena, who is stationed in Afghanistan. Meanwhile, Dan loses an important job and D.J. admits post-military life has been hard, so they come up with a plan to make extra money, on the seventh episode of the revival of 'Roseanne,' TUESDAY, MAY 8 (8:00-8:30 p.m. EDT), on The ABC Television Network. (Adam Rose/ABC via Getty Images) ROSEANNE BARR, JAYDEN REY, SARA GILBERT, LAURIE METCALF
ROSEANNE - ABC's 'Roseanne' stars Ames McNamara as Mark, Sara Gilbert as Darlene Conner, Laurie Metcalf as Jackie Harris, Emma Kenney as Harris Conner, Jayden Rey as Mary, Roseanne Barr as Roseanne Conner, Michael Fishman as D.J. Conner, John Goodman as Dan Conner, Lecy Goranson as Becky Conner, and Sarah Chalke as Andrea. (Robert Trachtenberg/ABC via Getty Images)
ROSEANNE - 'Roseanne Gets the Chair' - Roseanne's clash with Darlene over how she's raising her kids - especially Harris - reaches a breaking point; while Dan tries to help Roseanne with her bad knee by getting her an elevator chair, which she refuses to use because she doesn't want to admit getting old, on the second episode of the revival of 'Roseanne,' TUESDAY, APRIL 3 (8:00-8:30 p.m. EDT), on The ABC Television Network. (Adam Rose via Getty Images) ROSEANNE BARR, JOHN GOODMAN
ROSEANNE - 'Roseanne Gets the Chair' - Roseanne's clash with Darlene over how she's raising her kids - especially Harris - reaches a breaking point; while Dan tries to help Roseanne with her bad knee by getting her an elevator chair, which she refuses to use because she doesn't want to admit getting old, on the second episode of the revival of 'Roseanne,' TUESDAY, APRIL 3 (8:00-8:30 p.m. EDT), on The ABC Television Network. (Adam Rose via Getty Images) ROSEANNE BARR, JOHN GOODMAN, LAURIE METCALF, EMMA KENNEY, SARA GILBERT
ROSEANNE - 'Roseanne Gets the Chair' - Roseanne's clash with Darlene over how she's raising her kids - especially Harris - reaches a breaking point; while Dan tries to help Roseanne with her bad knee by getting her an elevator chair, which she refuses to use because she doesn't want to admit getting old, on the second episode of the revival of 'Roseanne,' TUESDAY, APRIL 3 (8:00-8:30 p.m. EDT), on The ABC Television Network. (Adam Rose via Getty Images) SARA GILBERT, JOHN GOODMAN, LAURIE METCALF, ROSEANNE BARR
ROSEANNE - 'Roseanne Gets the Chair' - Roseanne's clash with Darlene over how she's raising her kids - especially Harris - reaches a breaking point; while Dan tries to help Roseanne with her bad knee by getting her an elevator chair, which she refuses to use because she doesn't want to admit getting old, on the second episode of the revival of 'Roseanne,' TUESDAY, APRIL 3 (8:00-8:30 p.m. EDT), on The ABC Television Network. (Adam Rose via Getty Images) ROSEANNE BARR
ROSEANNE - 'Eggs Over, Not Easy' - A crucial moment for Becky's surrogacy arrangement forces her and Darlene to critically assess each other's lives. Meanwhile, an animal rescue organization rejects Jackie's application to adopt a puppy; and Roseanne makes a plan to change their mind, on the fourth episode of the revival of 'Roseanne,' TUESDAY, APRIL 10 (8:00-8:30 p.m. EDT), on The ABC Television Network. (Adam Rose/ABC via Getty Images) LAURIE METCALF
ROSEANNE - 'Eggs Over, Not Easy' - A crucial moment for Becky's surrogacy arrangement forces her and Darlene to critically assess each other's lives. Meanwhile, an animal rescue organization rejects Jackie's application to adopt a puppy; and Roseanne makes a plan to change their mind, on the fourth episode of the revival of 'Roseanne,' TUESDAY, APRIL 10 (8:00-8:30 p.m. EDT), on The ABC Television Network. (Adam Rose/ABC via Getty Images) LECY GORANSON, LAURIE METCALF
ROSEANNE - Iconic comedy series Roseanne returns to The ABC Television Network on Tuesday, March 27, at 8 p.m. EDT, with nine new episodes featuring the complete original cast - Roseanne Barr, John Goodman, Sara Gilbert, Laurie Metcalf, Michael Fishman and Lecy Goranson. Sarah Chalke, who played the character Becky in later seasons, will also appear in another role. New cast joining the one-of-a-kind Conner family includes Emma Kenney as Harris Conner-Healy, Ames McNamara as Mark Conner-Healy and Jayden Rey as Mary Conner. With fresh stories that tackle todays issues and even more laughs from a brilliant cast and crew that havent missed a beat, audiences old and new will celebrate the homecoming of Americas favorite working-class family. (Adam Rose/ABC via Getty Images) SARA GILBERT, ROSEANNE BARR
ROSEANNE - 'Eggs Over, Not Easy' - A crucial moment for Becky's surrogacy arrangement forces her and Darlene to critically assess each other's lives. Meanwhile, an animal rescue organization rejects Jackie's application to adopt a puppy; and Roseanne makes a plan to change their mind, on the fourth episode of the revival of 'Roseanne,' TUESDAY, APRIL 10 (8:00-8:30 p.m. EDT), on The ABC Television Network. (Adam Rose/ABC via Getty Images) LECY GORANSON
ROSEANNE - Iconic comedy series Roseanne returns to The ABC Television Network on Tuesday, March 27, at 8 p.m. EDT, with nine new episodes featuring the complete original cast - Roseanne Barr, John Goodman, Sara Gilbert, Laurie Metcalf, Michael Fishman and Lecy Goranson. Sarah Chalke, who played the character Becky in later seasons, will also appear in another role. New cast joining the one-of-a-kind Conner family includes Emma Kenney as Harris Conner-Healy, Ames McNamara as Mark Conner-Healy and Jayden Rey as Mary Conner. With fresh stories that tackle todays issues and even more laughs from a brilliant cast and crew that havent missed a beat, audiences old and new will celebrate the homecoming of Americas favorite working-class family. (Adam Rose/ABC via Getty Images) ROSEANNE BARR, JOHN GOODMAN
ROSEANNE - Iconic comedy series Roseanne returns to The ABC Television Network on Tuesday, March 27, at 8 p.m. EDT, with nine new episodes featuring the complete original cast - Roseanne Barr, John Goodman, Sara Gilbert, Laurie Metcalf, Michael Fishman and Lecy Goranson. Sarah Chalke, who played the character Becky in later seasons, will also appear in another role. New cast joining the one-of-a-kind Conner family includes Emma Kenney as Harris Conner-Healy, Ames McNamara as Mark Conner-Healy and Jayden Rey as Mary Conner. With fresh stories that tackle todays issues and even more laughs from a brilliant cast and crew that havent missed a beat, audiences old and new will celebrate the homecoming of Americas favorite working-class family. (Adam Rose/ABC via Getty Images) ROSEANNE BARR, JOHN GOODMAN
ROSEANNE - Iconic comedy series Roseanne returns to The ABC Television Network on Tuesday, March 27, at 8 p.m. EDT, with nine new episodes featuring the complete original cast - Roseanne Barr, John Goodman, Sara Gilbert, Laurie Metcalf, Michael Fishman and Lecy Goranson. Sarah Chalke, who played the character Becky in later seasons, will also appear in another role. New cast joining the one-of-a-kind Conner family includes Emma Kenney as Harris Conner-Healy, Ames McNamara as Mark Conner-Healy and Jayden Rey as Mary Conner. With fresh stories that tackle todays issues and even more laughs from a brilliant cast and crew that havent missed a beat, audiences old and new will celebrate the homecoming of Americas favorite working-class family. (Adam Rose/ABC via Getty Images) SARA GILBERT, LAURIE METCALF, ROSEANNE BARR
ROSEANNE - 'No Country for Old Women' - After Beverly gets kicked out of the nursing home, Roseanne and Jackie fight over who will take care of their mother. Meanwhile, Mark's creative touch with building a birdhouse for Dan's customer is more than Dan can handle, but Darlene defends her son, on the sixth episode of the revival of 'Roseanne,' TUESDAY, MAY 1 (8:00-8:30 p.m. EDT), on The ABC Television Network. (Greg Gayne/ABC via Getty Images) JOHN GOODMAN, LAURIE METCALF, ROSEANNE BARR
ROSEANNE - 'Darlene v. David' - David unexpectedly shows up for Harris' birthday after being absent for years, forcing Darlene to re-examine their relationship and the rest of the family. Meanwhile, Roseanne and Jackie's mother, Bev, temporarily moves into the Conner home after an incident at the nursing home prevents her from returning, on the fifth episode of the revival of 'Roseanne,' TUESDAY, APRIL 17 (8:00-8:30 p.m. EDT), on The ABC Television Network. (Greg Gayne/ABC via Getty Images) ROSEANNE BARR, ESTELLE PARSONS
ROSEANNE - 'Go Cubs' - The Conners can't pay their Wi-Fi bill, so they befriend their new neighbors to use the internet for Mary to Skype with mom Geena, who is stationed in Afghanistan. Meanwhile, Dan loses an important job and D.J. admits post-military life has been hard, so they come up with a plan to make extra money, on the seventh episode of the revival of 'Roseanne,' TUESDAY, MAY 8 (8:00-8:30 p.m. EDT), on The ABC Television Network. (Adam Rose/ABC via Getty Images) ROSEANNE BARR, JOHN GOODMAN
HIDE CAPTION
SHOW CAPTION
of
SEE ALL
BACK TO SLIDE

"Aww, they kept everything exactly as it was when you guys were kids," he says. 

"Yeah, it's called poverty," Darlene quips.

Watch David and Darlene's reunion in the Roseanne revival below.

Galecki played David for 93 episodes from 1992 through 1997 during Roseanne's original run on ABC. In the 1997 series finale, which the revival did away with, it was revealed that David was actually dating Becky and that Roseanne put David and Darlene together because it made more sense for the book she was writing.

On Monday, Gilbert shared a screenshot of a text conversation she and Galecki had last June when it came to naming David and Darlene's son. As a tribute to the late actor Glenn Quinn, who portrayed David's brother Mark Healy, they chose the name Mark for their onscreen son. (Quinn died in 2002 from a drug overdose.)

Roseanne airs Tuesdays at 8 p.m. ET/PT on ABC.

27 PHOTOS
Roseanne show
See Gallery
Roseanne show
UNITED STATES - JANUARY 24: ROSEANNE - 'The Monday Thru Friday Show' - Season One - 1/24/89, Roseanne (Roseanne Barr) and Dan (John Goodman) disagree about where to spend a romantic 15th anniversary; Darlene (Sara Gilbert, top left) found her paper route more than she could handle; Becky (Lecy Goranson, top center) refused to dissect a frog in biology class. Laurie Metcalf (Jackie) and Michael Fishman (D.J.) also starred., (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - JANUARY 19: ROSEANNE - 'Radio Days' 11/29/88 Sara Gilbert, Alicia Goranson, Roseanne Bar, Michael Fishman, John Goodman (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - JANUARY 26: ROSEANNE - 'The Memory Game' 12/13/88 Roseanne Barr, John Goodman (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - SEPTEMBER 08: ROSEANNE - gallery - Season Two - 9/8/89, Pictured, from left: Lecy Goranson (Becky), Roseanne Barr (Roseanne), John Goodman (Dan), Sara Gilbert (Darlene), Michael Fishman (D.J.), (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - NOVEMBER 29: ROSEANNE - 'Radio Days' - Season One - 11/29/88, A songwriting contest unleashes creativity in Dan and Roseanne. Pictured: Michael Fishman (D.J.), Lecy Goranson (Becky), Sara Gilbert (Darlene), (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - DECEMBER 06: ROSEANNE - 'Lovers' Lane' - Season One - 12/6/88, Jackie (Laurie Metcalf) had a salacious bet on the line with Booker (George Clooney) on bowling night., (Photo by ABC Photo Archives/ABC via Getty Images)
ROSEANNE - 'Pretty in Black' which aired on October 13, 1992. (Photo by ABC Photo Archives/ABC via Getty Images) ROSEANNE BARR
UNITED STATES - JANUARY 03: ROSEANNE - 'Dan's Birthday Bash' - Season One - 1/3/89, Becky (Lecy Goranson), Roseanne (Roseanne Barr) and Darlene (Sara Gilbert) prepared a birthday breakfast for Dan., (Photo by ABC Photo Archives/ABC via Getty Images)
ROSEANNE - 'Breaking Up Is Hard To Do' which aired on February 18, 1992. (Photo by ABC Photo Archives/ABC via Getty Images) ROSEANNE BARR;JOHN GOODMAN
UNITED STATES - JANUARY 31: ROSEANNE - 'Bridge Over Troubled Sonny' - Season One - 1/31/89, Jackie (Laurie Metcalf, left) helped Crystal struggle with her husband's death; and Roseanne (Roseanne Barr) struggles with the secret she knows about Sonny, that she wants to tell Crystal. , (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - FEBRUARY 16: ROSEANNE- 'Like, a New Job' 10/9/90 Sara Gilbert (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - MARCH 04: ROSEANNE- 'The Monday Thru Friday Show' 1/24/89 Roseanne Barr, John Goodman (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - MAY 02: ROSEANNE - 'Let's Call It Quits' - Season One - 5/2/89, Roseanne (Roseanne Barr, center) had difficulty accepting new rules from a tough new supervisor at the factory. Natalie West (Crystal) and Laurie Metcalf (Jackie) also star., (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - APRIL 11: ROSEANNE - 'Death and Stuff' - Season One - 4/11/89, A door-to-door saleman dropped dead in Roseanne (Roseanne Barr) and Dan's (John Goodman) kitchen., (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - MARCH 04: ROSEANNE- 'Like, a Virgin' 10/2/90 Matt Norero, Sara Gilbert (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - OCTOBER 03: ROSEANNE - 'Somebody Stole My Gal' - Season Two - 10/3/89, A lonely architect attempts to buy Roseanne (Roseanne Barr) and Dan's (John Goodman) friendship with extravagant gifts., (Photo by ABC Photo Archives/ABC via Getty Images)
ROSEANNE - 'The Mommy's Curse' which aired on September 21, 1993. (Photo by ABC Photo Archives/ABC via Getty Images) JOHNNY GALECKI;MICHAEL FISHMAN
UNITED STATES - FEBRUARY 15: ROSEANNE- 'D-I-V-O-R-C-E' 11/1/88 Roseanne Barr, Michael Fishman (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - DECEMBER 06: ROSEANNE - 'Lovers' Lane' - Season One - 12/6/88, Bowling night found a different activity for Roseanne (Roseanne Barr), Becky (Lecy Goranson), Darlene (Sara Gilbert), D.J. (Michael Fishman) and Dan (John Goodman) to engage at the bowling alley. , (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - JANUARY 28: ROSEANNE - 'Dan's Birthday Bash' 1/3/89 Alicia Goranson, Roseanne Barr, Sara Gilbert (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - OCTOBER 19: ROSEANNE - 'Sleeper' - Season Seven - 10/19/94, Michael Fishman (D.J.) on the ABC Television Network comedy 'Roseanne'. 'Roseanne' is the story of a working class family struggling with life's essential problems., (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - SEPTEMBER 18: ROSEANNE - 'The Test' - Season Three - 9/18/90, Dan (John Goodman), Darlene (Sara Gilbert) and D.J. (Michael Fishman) were on pins and needles when Roseanne (Roseanne Barr) thought that she was pregnant again., (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - MAY 07: ROSEANNE - 'Scenes from a Barbecue' - Season Three - 5/7/91, Roseanne Barr (Roseanne), Shelley Winters (Nana) on the ABC Television Network comedy 'Roseanne'. 'Roseanne' is the story of a working class family struggling with life's essential problems., (Photo by ABC Photo Archives/ABC via Getty Images)
ROSEANNE - 'Terms of Estrangement' which aired on September 15, 1992. (Photo by ABC Photo Archives/ABC via Getty Images) GLENN QUINN
UNITED STATES - DECEMBER 13: ROSEANNE - 'The Memory Game' - Season One - 12/13/88, Roseanne Barr (Roseanne), Lecy Goranson (Becky), (Photo by ABC Photo Archives/ABC via Getty Images)
ROSEANNE - 'Terms of Estrangement' which aired on September 15, 1992. (Photo by ABC Photo Archives/ABC via Getty Images) ALICIA LECY GORANSON;ROSEANNE BARR;JOHN GOODMAN
UNITED STATES - SEPTEMBER 29: ROSEANNE - 'The Dark Ages' - Season Five - 9/29/92, Sara Gilbert (Darlene), Roseanne Barr (Roseanne) on the ABC Television Network comedy 'Roseanne'. Dan and Roseanne look at Darlene in a new light after David spends the night., (Photo by ABC Photo Archives/ABC via Getty Images)
HIDE CAPTION
SHOW CAPTION
of
SEE ALL
BACK TO SLIDE

RELATED CONTENT:

'Roseanne' Cast Reveals 5 Behind-the-Scenes Secrets About the Revival (Exclusive)

'Roseanne' Star Emma Kenney Talks About Her 'Uncanny' Similarities To Darlene (Exclusive)

Here's How 'Roseanne' Tackled Parenting in the Modern Day

Read Full Story

Sign up for Entertainment Insider by AOL to get the hottest pop culture news delivered straight to your inbox!

Subscribe to our other newsletters

Emails may offer personalized content or ads. Learn more. You may unsubscribe any time.