Tim Matheson (born Timothy Lewis Matthieson; December 31, 1947) is an American actor, director and producer. He is perhaps best known for his portrayal of the smooth-talking Eric 'Otter' Stratton in the 1978 comedy Animal House and has had a variety of other well-known roles, including providing the voice of the lead character in the cartoon TV program Jonny Quest...(Wikipedia)

Credits include: Earthquake, Battlestar Galactica, Autumn Leaves, Battlestar Galactica and Bonanza

Credits include: White Heat, Human Desire, Revenge of the Creature, Born to Kill and Ride the Pink Horse

Credits include: The Letter, The Killer Elite, The Breaking Point, Woman on the Run and Across the Pacific

Credits include: I Was a Teenage Werewolf, Little House on the Prairie and The Errand Boy

Credits include: Ace in the Hole, Inherit the Wind, The Wild One, The Desperate Hours and Decision at Sundown

Credits include: Ride Lonesome, Bonanza, The Sheepman, The Deadly Tower and Desire Under the Elms

Credits include: Bonanza, The Reivers, Born Innocent, Menace on the Mountain and Texas Detour

Credits include: Last Train from Gun Hill, Attack, Elvis, Bonanza and Billy the Kid versus Dracula

Credits include: Hombre, The Computer Wore Tennis Shoes, The St. Valentine's Day Massacre, Bonanza and Posse

Credits include: Bonanza, Lady in Cement, The Girl in Black Stockings, Come Blow Your Horn and Cockeyed Cowboys of Calico County