Founded in 1981, iO (Formerly ImprovOlympic) is the world famous flashpoint of comic creativity that spawned an entire generation of America's best and brightest entertainers. Over 5000 people have trained and performed at iO's Chicago and Los Angeles theaters, including some of the most recognizable names in show business; Mike Myers, Chris Farley, David Koechner, Adam McKay, Tina Fey and many, many more. Enjoy four tickets to any cabaret theater show at iO Theater.