We dont have a biography for William O'Leary
2015Bosch (1 Episode) as Vincent Ackles
2011Shameless (3 Episodes) as Sgt. Rucker
2010Law & Order: LA (1 Episode) as Joe Laight
2010Rizzoli & Isles (1 Episode) as Worster
2009NCIS: Los Angeles (1 Episode) as Harry Zinetti
2009Kamen Rider: Dragon Knight (40 Episodes) as Xaviax
2007Moola as Mickey Fish
2006Big Love (1 Episode) as Unknown
2005Miss Congeniality 2: Armed and Fabulous as Agent Jenkins
2003NCIS (1 Episode) as Martin Freydano
2003Terminator 3: Rise of the Machines as Mr. Smith
2003Tremors (1 Episode) as George Meadows
2003Miracles (1 Episode) as Unknown
2002American Dreams (1 Episode) as Unknown
2002Without a Trace (1 Episode) as Carey Chase
2002CSI: Miami (2 Episodes) as Stewart Otis
200124 (2 Episodes) as Unknown
2001The Guardian (1 Episode) as Brad Fulton
2000Daybreak as Head of Security
2000The District (1 Episode) as Don Hardin
1999The West Wing (1 Episode) as Fish and Wildlife Deputy
1999Elvis Has Left the Building as Danny
1997Mad City as CTN Junior Executive
1997A Time to Revenge as Lyle Whittmar
1996Sabrina, the Teenage Witch (1 Episode) as Policeman (uncredited)
1996Project: ALF as Capt. Rick Mullican
1995Candyman: Farewell to the Flesh as Ethan Tarrant
1994Chicago Hope (1 Episode) as Unknown
1994The Enemy Within as Lt. William Dorsett
1993The X-Files (1 Episode) as Gas Station Man
1993In the Line of Duty: Ambush in Waco as Adrian
1991Home Improvement (30 Episodes) as Marty Taylor
1991Hot Shots! as Pete 'Dead Meat' Thompson
1991Flight of Black Angel as Capt. Eddie Gordon
1989Lost Angels as Link
1988Dear John (22 Episodes) as Ben Conners
1988Bull Durham as Jimmy
1987Walker as James Walker
1987Nice Girls Don't Explode as Andy
1986Matlock (1 Episode) as Unknown
1984Murder, She Wrote (1, 1 Episode) as Hank Duncan, FBI Agt. Ed Crider
1984Miami Vice (1 Episode) as Unknown