George Clooney is a top contender for Hollywood's prank king, getting into prank wars with other A-listers like Brad Pitt. Here's Clooney gets back at Jimmy Kimmel for pulling a prank on him and Hugh Laurie.
Kimmel may love pranks, but he's been the victim of a few good ones. For April Fools' Day in 2015, Rihanna broke into Kimmel's house to deliver an early wake-up call.
Another victim of Clooney: legendary producer Jerry Weintraub, who in 2012 told Ellen DeGeneres about how the actor surprised him (with an assist from Brad Pitt).
In 2010, Ashton Kutcher decided to turn the tables on TMZ, working with his mates to follow Harvey Levin's team around like paparazzi and lampooning the outlet's TV show.
In 2012, Conan O'Brien announced in a video message to employees of Mashable that he had bought the website for $3,500 and ousted CEO Pete Cashmore.
With "Back to the Future" on everyone's mind in 2015, IGN tried to fool fans by unveiling a trailer for a new chapter in the franchise…featuring Dominic Toretto drifting around corners with the DeLorean.
After being pranked multiple times by daytime queen Ellen DeGeneres, "Today" show host Matt Lauer finally got his revenge in 2015 with this ballsy stunt.
Back to Kimmel, and a classic late night TV moment, when Sarah Silverman shocked her then-boyfriend Jimmy with a music video she made with his blood rival, Matt Damon.
For a special fan screening of 2015's "Magic Mike XXL," Channing Tatum decided to go undercover -- deep undercover.