Justin Timberlake and Jimmy Fallon test their friendship, sing 'Ironic' and throw pizza party on 'Tonight Show'
Lin-Manuel rapped about 'Harry Potter' all thanks to Jimmy Fallon's 'Wheel of Freestyle'
Miley Cyrus shows off her dance moves in 'Ew!' sketch with Jimmy Fallon
Jimmy Fallon defends Donald Trump interview: 'I'm never too hard on anyone' (Video)
Donald Trump lets Jimmy Fallon mess his hair in 'Tonight Show' appearance
Mel Brooks remembers his 'dear friend' Gene Wilder on the 'Tonight Show'
Team USA gymnasts play life-sized Hungry, Hungry Hippos with Jimmy Fallon
Jerry Seinfeld reveals the joke he wrote for Obama, plans to bring 'Comedians in Cars' to TV
Jimmy Fallon named as next Golden Globes host
Ariana Grande and Jimmy Fallon perform a hilarious Snapchat duet of 'Into You'
Macklemore and Ryan Lewis go to work in office remix of 'Dance Off': Watch
Jimmy Fallon, Neil Young get political while singing on a tree stump (Video)
Jay Leno pokes fun at Trump, Clinton and Sanders in 'Tonight Show' monologue
President Obama pens 'thank you notes' with Jimmy Fallon (Video)
Obama: I'm 'worried' about the GOP
Madonna becomes 'speechless' meeting President Obama: See the pics!
Blake Shelton tries sushi for the first time on the 'Tonight Show,' says it has the texture of 'play dough'
Jennifer Lawrence admits she took an Ambien before filming 'Hunger Games' scene, wipes away boogers on 'Tonight Show'
George W. Bush got into painting thanks to an iPhone app
Jennifer Lopez gave dance lessons to Kerry Washington, who clearly needs to do a 'Scandal' musical episode now
Melissa McCarthy pulls out all the stops for epic, confetti-covered lip sync battle
Claire Danes drops F-bombs playing 'Fast Family Feud' with Jimmy Fallon (Video)
Watch Jimmy Fallon's amazing '90s-inspired TGIF theme song and retro opening credits
Audra McDonald, Jimmy Fallon sing absurd Yahoo! answers on 'Tonight Show'
Watch Demi Lovato nail impersonations of Christina Aguilera, Fetty Wap on 'Tonight Show'
Jennifer Lopez twerks in new 'Ew!' sketch with Jimmy Fallon
'Fuller House' cast teaches Jimmy Fallon's Donald Trump how to make America great again
Kristen Wiig poses as Super Bowl champion Peyton Manning for Jimmy Fallon skit (video)
Natalie Portman crashes Sia's performance with Jimmy Fallon and The Roots, everyone rocks epic Sia wigs!
Sarah Silverman sends Jimmy Fallon into hysterics playing 'Word Sneak' game (Video)