26 famous people you probably forgot guest starred on 'Friends'

It's always important to never forget about where you came from, especially when you're a celebrity.

SEE ALSO: 5 things you should never say to a die-hard 'Friends' fan, ranked

"Friends" basically became a breeding ground for famous people to make cameos! We decided to round up some of our absolute favorite ones because they'll always be there for us...

26 & 25.) Billy Crystal and Robin Williams as Tim and Tomas
Season 3, Episode 24, "The One With The Ultimate Fighting Champion"

Photo cred: NBC

24.) Selma Blair as Wendy
Season 9, Episode 10, "The One With Christmas In Tulsa"

Photo cred: NBC

23.) Richard Branson as the vendor
Season 4, Episode 23, "The One With Ross's Wedding: Part 1"

Photo cred: NBC

22.) Alec Baldwin as Parker
Season 8, Episode 17, "The One With The Tea Leaves"
Season 8, Episode 18, "The One In Massapequa"

Photo cred: NBC

21.) Gabrielle Union as Kristen Lang
Season 7, Episode 17, "The One With The Cheap Wedding Dress"

Photo cred: NBC

20.) Jean-Claude Van Damme as himself
Season 2, Episode 13, "The One After The Super Bowl: Part 2"

Photo cred: NBC

19.) Emily Osment as Lelani Mayolanofavich
Season 8, Episode 6, "The One With The Halloween Party"

Photo cred: NBC

18.) Jeff Goldblum as Leonard Hayes
Season 9, Episode 15, "The One With The Mugging"

Photo cred: NBC

17.) Jason Alexander as Earl
Season 7, Episode 13, "The One Where Rosita Dies"

Photo cred: NBC

16.) John Stamos as Zack
Season 9, Episode 22, "The One With The Donor"

Photo cred: NBC

15.) Jennifer Grey as Mindy
Season 1, Episode 20, "The One With The Evil Orthodontist"

Photo cred: NBC

14.) Sean Penn as Eric
Season 8, Episode 6, "The One With The Halloween Party"
Season 8, Episode 7, "The One With The Stain"

Photo cred: NBC

13.) Gary Oldman as Richard Crosby
Season 7, Episode 23, "The One With Monica And Chandler's Wedding: Part 1"
Season 7, Episode 24, "The One With Monica And Chandler's Wedding: Part 2"

Photo cred: NBC

12 & 11.) Noah Wyle and George Clooney as Dr. Jeffrey Rosen and Dr. Michael Mitchell
Season 1, Episode 16, "The One With Two Parts: Part 1"
Season 1, Episode 17, "The One With Two Parts: Part 2"

Photo cred: NBC

10.) Julia Roberts as Susie Moss
Season 2, Episode 13, "The One After The Super Bowl: Part 2"

Photo cred: NBC

9.) Denise Richards as Cassie Gellar
Season 7, Episode 19, "The One With Ross And Monica's Cousin"

Photo cred: NBC

8.) Bruce Willis as Paul Stevens
Season 6, Episode 21, "The One Where Ross Meets Elizabeth's Dad"
Season 6, Episode 22, "The One Where Paul's The Man"
Season 6, Episode 23, "The One With The Ring"

Photo cred: NBC

7.) Jennifer Coolidge as Amanda Buffamonteezi
Season 10, Episode 3, "The One With Ross's Tan"

Photo cred: NBC

6.) Reese Witherspoon as Jill Green
Season 6, Episode 13, "The One With Rachel's Sister"
Season 6, Episode 14, "The One Where Chandler Can't Cry"

Photo cred: Netflix/NBC

5.) Hugh Laurie as the man on the plane
Season 4, Episode 24, "The One With Ross's Wedding: Part 2"

Photo cred: NBC

4.) Anna Faris as Erica
Season 10, many episodes

Photo cred: NBC

3.) Brad Pitt as Will Colbert
Season 8, Episode 9, "The One With The Rumor"

Photo cred: NBC

2.) Winona Ryder as Melissa Warburton
Season 7, Episode 20, "The One With Rachel's Big Kiss"

Photo cred: NBC

1.) Danny DeVito as the stripper
Season 10, Episode 11, "The One Where The Stripper Cries"

Photo cred: NBC

Now while we go load out Netflix cue for the all 10 seasons of "Friends," check out more love in the gallery below!

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