Patrick Thomas O’Brien
Known For
CSI: Crime Scene Investigation
Edward Cormier
Monk
Brent Donovan
Gilmore Girls
Brian's Dad
Married... with Children
WallyMarried... with Children
Bob Thompson
The West Wing
Hanson
It's Always Sunny in Philadelphia
Associate
ER
Carmichael
Malcolm in the Middle
Dad Driver
Sabrina, the Teenage Witch
Index ManSabrina, the Teenage Witch
Cupid