
Acting
Patrick Thomas O'Brien
Wisconsin, USABorn 1951 (75 years old)
25
Films
43
TV Shows
Known For
68 Credits
CSI: Crime Scene Investigation
as Edward Cormier
2000

Monk
as Brent Donovan
2002

ER
as Carmichael
1994

The West Wing
as Hanson
1999

Gilmore Girls
as Brian's Dad
2000

Malcolm in the Middle
as Dad Driver
2000

It's Always Sunny in Philadelphia
as Associate
2005

Married... with Children
as Wally
1987

Married... with Children
as Bob Thompson
1987

Babylon 5
as Cart Owner
1994

Baywatch
1989

Family Matters
as Mr. Denton
1989