Greg Callahan
- Oyunculuk
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Filmografi
- Default · Saltzman
- Samantha Who? · Fake Dad
- Close to Home · Judge
- Ortak(lar) · Jameson
- The O.C. · Plainclothes Cop
- Crossing Jordan · Mr. Montgomery
- Alien Fury: Countdown to Invasion · Secretary of Defense
- The West Wing · Man
- Godzilla · the Governor
- Shadow of Doubt · Judge Nathan
- The Visitor · NSA General
- Frasier · Rev. Franklin, Doctor
- Doogie Howser, M.D. · Dr. Goodland
- Bizim Ev · Mr. Benton
- Married... with Children · Bank President
- Murder, She Wrote · Edward Delaney
- Airwolf · Dr. Gastner