John Allen NelsonActingAugust 28, 1959 (66 years old)San Antonio, Texas, USAPopularity: 1IMDbBiographyFrom Wikipedia, the free encyclopedia John Allen Nelson (born August 28, 1959) is an American actor.Known For8.2Grey's AnatomyArthur Soltanoff7.6NCISLloyd Manditsky8.3Criminal MindsDan Murphy7.6CSI: Crime Scene InvestigationRoger Gentry7.824Walt Cummings8.4FriendsPaul8.0CastleWalter Dennis7.7CSI: MiamiMike Rydell7.2Without a TraceMark Duncan7.5Murder, She WroteTod Sterling7.9Rizzoli & IslesRobby Davenport8.0Quantum LeapCapt. Bill 'Bird Dog' BirdellFilmographyMovies15TV Shows32AllCast12Crew4Browse All2000s4.7Feast III: The Happy FinishShitkicker5.9Baywatch: Hawaiian WeddingJohn D. Cort1990s4.4ShelterMartin Roberts5.0Criminal PassionConnor Ashcroft7.0XXX's & OOO'sAndy St. James6.0Best of the Best 2Screenplay5.8American YakuzaScreenplay4.1Sunset HeatWriter4.5Rich Men, Single WomenTravis1980s7.0Perry Mason: The Case of the Lethal LessonFrank Wellman Jr.6.6Killer Klowns from Outer SpaceDave Hanson3.6Deathstalker III: The Warriors from HellDeathstalker5.7Saigon CommandosTimothy Bryant5.8HunkHunk Golden