Whose Line Is It Anyway? Season 4 Episode 21 Kathy Greenwood ( Air Date 2001-12-19 ) Genre Comedy, Reality category. Overview "Colin and Ryan play peculiar parents in a game of “Meet the Family”; “Song Styles” finds the cast doing a number on a number from “West Side Story”; and Wayne battles voodoo in a round of “Weird Newscasters.” Drew Carey hosts.".