
In celebration of the 20th anniversary of "Who Wants to Be a Millionaire," which debuted in the U.S. as a prime-time series in January 2000, late-night fixture Jimmy Kimmel steps into prime time as host of a special run of episodes featuring celebrity contestants playing for charity. For the first time in the history of the U.S. franchise, contestants can invite a guest into the hot seat to help them answer questions: it can be a relative, a beloved teacher or a famed trivia expert -- anyone they want -- to help them win as much money as they can for the charity of their choosing.

Celebrity contestants Paul Scheer, Rob Huebel, Awkwafina and Paul Feig.

Contestants Brad Paisley, Clayton Kershaw, Michael Kosta and Wendi McLendon-Covey.