Julia Roberts and Drew Barrymore worked for a scale salary of $250,000 as a favor to their friend, director George Clooney. Brad Pitt and Matt Damon did cameos for free.
The clip from the The Newlywed Game (1966) is a real clip. It was long thought to be an urban legend and at one time even the host came to believe it was not real.
Sam Rockwell met with the real Chuck Barris and got him to read out his lines so he would have a record of Barris' style of delivery.