Personal Info
Known For
Acting
Born
January 26, 1951 (age 75)
Place of Birth
Wisconsin, USA
Also Known As
Patrick T. O'Brien
Patrick O'Brien
P. O'Brien
Patrick Thomas O'Brien
Known For
CSI: Crime Scene Investigation
Edward Cormier
2000
Family Matters
Mr. Denton
1989
Baywatch
1989
Sliders
Jake
1995
Monk
Brent Donovan
2002
Home Improvement
Ink Ingram
1991
The West Wing
Hanson
1999
ER
Carmichael
1994
Gilmore Girls
Brian's Dad
2000
Malcolm in the Middle
Dad Driver
2000
Married... with Children
Wally
1987
Married... with Children
Bob Thompson
1987
It's Always Sunny in Philadelphia
Associate
2005
Night Court
Ernie Carter
1984
Babylon 5
Cart Owner
1994
Sabrina, the Teenage Witch
Index Man
1996
Sabrina, the Teenage Witch
Cupid
1996
The Wonder Years
Mr. Santa
1988
Lois & Clark: The New Adventures of Superman
Barker
1993
Caroline in the City
Councilman Hardy
1995