Derek McGrath

Derek McGrath (born July 15, 1951) is a Canadian actor.

Career
McGrath is best known for his role as Andy Schroder in four episodes of the hit television sitcom Cheers. He is also well known for playing Dr. Benjamin Jeffcoate in the TV series My Secret Identity from 1988 to 1991, and for playing Chell in the Star Trek: Voyager episodes "Learning Curve" and "Repression".

He voiced the character of Knuckles, Muggsy, Spike and additional voices on the animated series Heathcliff from 1984 through 1987. He also had a recurring role as Ozwald Valentine on the series Dallas from 1986 through 1988. He also starred in the medical drama Doc, which aired 2001 through 2004.

McGrath's motion picture credits include Nothing Personal, Mr. Mom, Police Academy 4: Citizens on Patrol, She's Out of Control, Freaked, and Hologram Man.