Whose Line Is It Anyway? Season 4 Episode 20 Brad Sherwood ( Air Date 2001-12-13 ) Genre Comedy, Reality category. Overview "Colin Mochrie helms a pet-store movie scene in a round of “Hollywood Director”; Wayne Brady plays a talk-show guest in “Party Quirks”; and the guys get some help from Drew during a sketch called “Helping Hands,” about an uppity soda jerk. Ryan Stiles also appears.".