Tim Matheson (born Timothy Lewis Matthieson; December 31, 1947) is an American actor and director. Some of his best-known acting roles include the title character of the 1960s animated Jonny Quest TV series, Eric "Otter" Stratton in the 1978 comedy film National Lampoon's Animal House, and the recurring role of Vice President John Hoynes in the 2000s NBC drama The West Wing, which earned him two Primetime Emmy Award nominations for Outstanding Guest Actor in a Drama Series.