William Duffy

2020s

1. 2020
   

   A West Wing Special to Benefit When We All Vote

   Larry

   86

2010s

1. 2015
   

   Bosch

   Vault Attendant · 1 episode

   83
2. 2012
   

   Scandal

   Ralph Greenwald · 1 episode

   76
3. 2010
   

   Parenthood

   Mr. Carlson · 1 episode

   81

4. The Ascent

   Thomas Shaw

2000s

1. 2008
   

   The Mentalist

   TSA Agent #2 · 1 episode

   83
2. 2007
   

   Carpoolers

   TV · 1 Season · Comedy

   75
3. 2006
   

   Heroes

   ER Doctor · 1 episode

   75

4. Waist Deep

   Newscaster #2

5. 

   Karla

   Detective Porter

   40
6. 2005
   

   Criminal Minds

   Dr. Larson · 1 episode

   82
7. 

   It's Always Sunny in Philadelphia

   Hedge Fund Guy · 1 episode

   87
8. 2004
   

   Sniper 3

   Richard Addis

   54
9. 2003
   

   NCIS

   Harris Cobb · 1 episode

   77
10. 

    The O.C.

    (voice) · 1 episode

    76
11. 2002
    

    American Dreams

    Father Gregory · 1 episode

    70
12. 2001
    

    The Division

    Commander Jackson · 1 episode

    67

1990s

1. 1999
   

   The West Wing

   Staffer · 46 episodes

   87
2. 

   Blast from the Past

   Workman #1

   62
3. 1997
   

   Double Tap

   Gas Man

   51
4. 1994

   Betrayed by Love

   Paxton

5. 1992
   

   Hearts Afire

   Doctor · 1 episode

6. 1990
   

   Beverly Hills, 90210

   Doorman · 1 episode

   68
7. 

   Law & Order

   CSU Technician · 1 episode

   77

8. The Two Jakes

   Desk Sergeant

1970s

1. 1970

   Loving

   Jay

1960s

1. 1965
   

   Brainstorm

   Orderly (uncredited)

   65

1970s

1. 1977

   Death Game

   Executive Producer