We don't have a biography for Don O'Brien yet. Hang in there, or go ahead and contribute one.
Appearances
Doogie Howser, M.D.
Guest cast, played by Tim O'Connor
- Episode 2x10: Don't Let the Turkeys Get You Down (Nov 14, 1990)
- Episode 2x19: Nobody Expects the Spanish Inquisition (Feb 13, 1991)