<P> Carpenter appeared as himself in the second half of the fourth season of Oz . He plays a contestant in a fictional TV game show called Up Your Ante that the prisoners in Em City are watching . The show within the show is hosted by Gordon Elliott, with Eartha Kitt and Didi Conn appearing as celebrity participants . </P> <P> With Rod L. Evans, Carpenter co-authored a trivia book titled Matching Wits With the Million - Dollar Mind: The World's Hardest Trivia Quizzes From America's First Quiz Show Millionaire . The book was published by Berkley Books in 2002 . </P> <P> In 2000, Carpenter appeared in the Who Wants to Be a Millionaire Champions Edition, in which previous contestants who won $250,000--$1,000,000 played again, with half of their additional winnings from the Champions Edition going to a charity of their choice . Carpenter won $250,000, bringing his total Millionaire winnings to $1,250,000 . In 2004, Carpenter participated in Super Millionaire, as one of the "Three Wise Men" on the episode during which Robert "Bob - O" Essig won $1,000,000 . </P> <P> He later participated as part of the Mob on NBC's 1 vs. 100 on October 27, 2006, and as a contestant on the Game Show Network game show Grand Slam . Carpenter appeared on the August 16, 2009 episode of Millionaire in prime time for its tenth anniversary . In the audience with him were his father, his wife, and his son . Additionally, he was also the first expert in the "Ask the Expert" lifeline for the eighth season of the syndicated series . </P>

Who wants to be a millionaire winner episode