On last night's TONIGHT SHOW, Jimmy and guest Steve Carell got cards with random words, such as 'kumquat' and 'friend zone,' and had to work them into a casual conversation.

Fans of JIMMY KIMMEL LIVE know that Matt Damon gets mentioned a lot on the show, so in honor of his birthday yesterday, a 5th grader named Luke Graykal prepared a little presentation to celebrate.

On last night's TONIGHT SHOW, music guest Big & Rich perform 'Look At You', a track off their new album, 'Gravity'. Check out the performance below!

On last night's TONIGHT SHOW, Jimmy and guest Robert Downey Jr. pondered the mysteries of the universe while sitting on a mountaintop in an intense staredown.

Zachary Quinto stopped by last night's LATE NIGHT WITH SETH MEYERS to talk about his new Starz unscripted series 'The Chair' in which he teams with Project Greenlight producer Chris Moore.

The cast of 'Impractical Jokers' stopped by last night's LATE NIGHT WITH SETH MEYERS to talk about their new series 'Joker's Wild'. Check out clips from the appearance below!

On last night's TONIGHT SHOW, Jimmy chats with Artie Lange about his Comedy Central special, Artie Lange: The Stench of Failure, and the bet Artie won at a Rolling Stones concert. Check out the appearance below!

On last night's TONIGHT SHOW, Jimmy shares some games you should avoid playing at all costs, including Ring Around the Nosey and Vanilla Ice Electronic Rap.

On last night's TONIGHT SHOW, music guest Jason Aldean performed the new single, 'Just Gettin' Started' from his just released album 'Old Boots, New Dirt'. Check out the appearance below!

On last night's TONIGHT SHOW, Jimmy and guest Kristen Stewart lighten the mood after talking about her dramatic role in the new film 'Camp X-Ray' by playing Ring Around the Nosey.