From Wikipedia the free encyclopedia Daniel Randall James Roebuck born March 4 1963 is an American actor and writer His best known roles include Deputy Marshal Robert Biggs in The Fugitive and its spinoff film US Marshals Jay Leno in The Late Shift and Dr Leslie Arzt in Lost as well as numerous Rob Zombie and Don Coscarelli films He is also known for his role as Cliff Lewis Ben Matlocks private investigator on Matlock from 1992 until 1995 Description above from the Wikipedia article Daniel Roebuck licensed under CCBYSA full list of contributors on Wikipedia