Tim Matheson. Actor: National Lampoon's Animal House. Tim Matheson is an American actor, director and producer perhaps best known for his portrayal of the smooth talking 'Eric "Otter" Stratton' in the 1978 comedy, National Lampoon's Animal House (1978), but has had a variety of other well-known roles both before and since, including critical accolades for his playing "Vice President John Hoynes" on the television series, The West Wing (1999), which...