Patrick Thomas O'Brien
Acting
1951-01-26Wisconsin, USA
Known For
tv
7.6
2000
CSI: Crime Scene Investigation
2000 · tv
tv
7.9
2000
Gilmore Girls
2000 · tv
tv
8.0
2002
Monk
2002 · tv
tv
7.8
1994
ER
1994 · tv
tv
8.3
1999
The West Wing
1999 · tv
tv
8.3
2005
It's Always Sunny in Philadelphia
2005 · tv
tv
8.5
2000
Malcolm in the Middle
2000 · tv
tv
7.7
1987
Married... with Children
1987 · tv
tv
8.0
1994
Babylon 5
1994 · tv
tv
6.0
1989
Baywatch
1989 · tv
tv
7.8
1996
Sabrina, the Teenage Witch
1996 · tv
tv
7.4
1991
Home Improvement
1991 · tv
tv
6.9
1993
Lois & Clark: The New Adventures of Superman
1993 · tv
tv
7.3
1984
Night Court
1984 · tv
tv
8.3
1988
The Wonder Years
1988 · tv
tv
7.6
1995
Sliders
1995 · tv
tv
8.4
2004
Drake & Josh
2004 · tv
tv
6.8
1989
Family Matters
1989 · tv
tv
7.1
1979
The Facts of Life
1979 · tv
tv
7.8
1991
Step by Step
1991 · tv
tv
6.6
1998
Felicity
1998 · tv
tv
6.4
1996
7th Heaven
1996 · tv
tv
7.7
1999
Roswell
1999 · tv
tv
6.5
1995
Caroline in the City
1995 · tv
tv
6.2
1987
Jake and the Fatman
1987 · tv
movie
8.0
2002
Catch Me If You Can
2002 · movie
tv
6.5
2001
Reba
2001 · tv
tv
7.7
1992
The Larry Sanders Show
1992 · tv
tv
5.9
1993
Saved by the Bell: The New Class
1993 · tv
tv
5.9
1995
Cybill
1995 · tv