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Daniel Randall James Roebuck (born March 4, 1963) is an American actor and screenwriter. His best-known roles include Deputy Marshal Robert Biggs in The Fugitive and its spin-off U.S. Marshals, Jay Leno in The Late Shift, and Dr. Leslie Arzt in Lost, as well as numerous films by Rob Zombie and Don Coscarelli. He is also known for his role as Cliff Lewis, Ben Matlock's private investigator, on the series Matlock from 1992 to 1995

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