Whose Line Is It Anyway? Season 4 Episode 23 Greg Proops ( Air Date 2002-01-24 ) Genre Comedy, Reality category. Overview "Games include “Multiple Personalities,” with the gang jumping from Scooby Doo to Richard Simmons to John Wayne; and a round of “Superheroes.” Players include Colin Mochrie, Wayne Brady and Ryan Stiles. Drew Carey hosts.".