Tim Matheson (born
Timothy Lewis Matthieson; December 31, 1947) is an American actor, director and producer. He is perhaps best known for his portrayals of the smooth-talking Eric "Otter" Stratton in the 1978 comedy
National Lampoon's Animal House and of Vice President
John Hoynes in the
NBC drama,
The West Wing. He has had a variety of other well-known roles, including providing the voice of the lead character in the cartoon TV program
Jonny Quest.