Colin Mochrie. Originally broadcast on British radio, "Whose Line Is It Anyway?" first aired in the U.S. on ABC in 1998 after the U.K. TV version concluded.
More TV Trivia
TD Waterhouse. Sam Waterston, who plays Jack McCoy on "Law & Order", originally replaced Michael Moriarty in 1994.
Jenny Jones. Jenny Jones is now a vocal advocate against breast implants.
Howard. "The Big Bang Theory" character Mrs. Wolowitz was never seen, but voiced by the late Carol Ann Susi.
Homicide Detective. "NCIS" is a spin-off of "JAG".
Steve Carell. Steve Carell left "The Office" at the end of Season 7.
Jon Voight. Jon Voight was nominated for an Oscar for his performance in "Runaway Train".