This special was hosted by Lewis Black and starred Mitch Fatel, Ed Galvez, Jessica Glassberg, George Carlin, Shelley Berman, Jimmy Carr, Jeff Dunham, Steve Byrne, Gallagher, Patton Oswalt, Aisha Tyler, Robin Williams, Brian Posehn, Greg Fitzsimmons, Gina Yashere, George Lopez, Lynne Koplitz, Kathy Griffin, Dave Attell, and Penn & Teller.
The jokes ranged over all types of subject matter: children, race, sex and religion.
The show is broken down into thirteen parts: comedy, physical comedy, timing is everything, improv, born funny?, ladies and gentlemen, dirty jokes, taboos, the bomb, hecklers, pain, the truth and what is laughter?
Professor Richard Wiseman explains the scientific and psychological source of comedy and talks about his search for the world's funniest joke.
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