WATCH: Will & Grace Cast Perform Theme SongIt returns to NBC on Thursday
WATCH: Jimmy Fallon and Chris Martin Sing David Bowie's "Life on Mars?"Check out Jimmy and Chris as they perform the David Bowie classic "Life On Mars?"
WATCH: Priyanka Chopra & Jimmy Fallon Have A Wing-Eating ContestPriyanka Chopra challenged Jimmy Fallon to see who can eat the most nuclear sauce-covered Atomic Wings in 20 seconds.
WATCH: Taraji P. Henson Plays 'The Acting Game' With Jimmy FallonCookie Lyon has made it to 'The Tonight Show'!
WATCH: Vince Vaughn & Jimmy Fallon Play 'Box Of Lies'To tell the truth or to not tell the truth?
WATCH: Katie Holmes and Ryan Reynolds Play 'Musical Beers' With Jimmy FallonKatie Holmes and Ryan Reynolds give fans a glimpse of their competitive side.
Chris Hemsworth and Jimmy Fallon Compete in a Sleigh Scooter RaceJimmy and Chris race around The Tonight Show halls on holiday-decked, high-speed sleigh scooters in a contest for the coveted Hemsworth Cup.
VIDEO: Jay Leno Makes A Surprise Appearance On 'The Tonight Show'Leno's new show, Jay Leno's Garage, debuts Wednesday at 10 p.m. on CNBC.
VIDEO: Reba McEntire and Jimmy Fallon Serenade Audience MemberJimmy and Reba invited an audience member on the stage for a very up close and personal duet.
VIDEO: Jimmy Fallon Channels Donald TrumpDonald Trump clarifies Megyn Kelly's comments.
WATCH: Mark Wahlberg and Jimmy Fallon Play Headshots!Mark and Jimmy take shots at each other!
WATCH: Lena Dunham Challenges Jimmy Fallon In 'Lip Sync Battle'Watch as Jimmy Fallon and Lena Dunham battle it out in 'Lip Sync Battle.'