Patrick Thomas O'Brien
Known for
- CSI: Crime Scene Investigation (2000)
- Gilmore Girls (2000)
- The West Wing (1999)
- Monk (2002)
- Married... with Children (1987)
- Married... with Children (1987)
- It's Always Sunny in Philadelphia (2005)
- ER (1994)
- Babylon 5 (1994)
- Malcolm in the Middle (2000)
- Sabrina, the Teenage Witch (1996)
- Sabrina, the Teenage Witch (1996)
- Night Court (1984)
- Home Improvement (1991)
- Baywatch (1989)
- Lois & Clark: The New Adventures of Superman (1993)
- The Wonder Years (1988)
- Family Matters (1989)
- The Facts of Life (1979)
- Sliders (1995)