What actor portrayed the vice-president and chief operating officer of Thoratec Corporation in the movie "United 93"?
Christian Clemenson: Christian Dayton Clemenson (born March 17, 1958) is an American film and television actor. Christian Clemenson:  He has appeared in a number of highly acclaimed films, including "Hannah and Her Sisters", "Broadcast News", "Apollo 13" and "The Big Lebowski", and portrayed Tom Burnett in Paul Greengrass' "United 93".
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