Format
The show's format vaguely resembled that of earlier TV shows like Candid Camera.
In the show, Kennedy travelled across the U.S. and found people to participate in his on-camera practical jokes ("experiments"). Usually there was at least one person (who was in on the joke) and the "mark" or victim of the prank (usually a friend or relative of the accomplice). Kennedy dons one of several disguises and assumed a character of his own creation to be part of the gag, often using a different voice. The mark then finds him/herself in some bizarre, unbelievable situation. When it appeared that the mark has had as much nonsense as he or she could tolerate, Kennedy delivered his punchline: "You've been X'ed!".
Read more about this topic: The Jamie Kennedy Experiment