Derek McGrath

[2] He is known for his roles in Cheers as Andy Schroeder (the would-be strangler of Diane Chambers),[2] Oswald Valentine in Dallas,[3] Dr. Benjamin Jeffcoate in My Secret Identity,[3] Crewman Chell in Star Trek: Voyager,[2] and as Dr. Derek Hebert in Doc.

He appeared in a recurring role as the character of Anglican priest Duncan Magee in the CBC Television sitcom Little Mosque on the Prairie.

He also voices Melvin, the mayor of Maple Lake in the animated series Bob & Doug.

He has also voiced various characters in Grossology, Pole Position, The Romance of Betty Boop, Intergalactic Thanksgiving, Bakugan Battle Brawlers, Super Why!, Wayside, Ruby Gloom, Toot and Puddle, Spliced, Jane and the Dragon and Take Me Up to the Ball Game.

He also played Garth Harble, Animal Control Officer, in the fifth season of The Red Green Show.