The Gatekeeper (2010/II) (pre-production) .... Mark
Mother's Day (2010) .... Jonathan 'Johnny' Koffin
Sorority Row (2009) .... Garrett
"CSI: Crime Scene Investigation" .... Dan Forester (3 episodes, 2008-2009) ... aka CSI: Las Vegas (South Africa: English title: informal alternative title) (USA: syndication title) ... aka C.S.I. (USA: short title) ... aka CSI: Weekends (USA: promotional title) ... aka Les experts (Canada: French title) - Mascara (2009) TV episode .... Dan Forester - One to Go (2009) TV episode .... Dan Forester - 19 Down (2008) TV episode .... Dan Forester
Anytown (2009) .... Brandon O'Leary
"Eleventh Hour" .... Bobby (1 episode, 2008) - Resurrection (2008) TV episode .... Bobby
Solstice (2008) (V) .... Mark
American Son (2008) .... Jake
Live Free or Die Hard (2007) .... Clay ... aka Die Hard 4.0 (Australia) (South Africa: English title) (UK) (USA: working title) ... aka Die Hard 4: Live Free or Die Hard (South Africa: English title: TV title)
Death Sentence (2007) (as Matthew O'Leary) .... Joe Darley
"Law & Order: Criminal Intent" .... Ethan Garrett (2 episodes, 2005) ... aka Law & Order: CI (USA: promotional abbreviation) - In the Wee Small Hours: Part 1 (2005) TV episode .... Ethan Garrett - In the Wee Small Hours: Part 2 (2005) TV episode .... Ethan Garrett
Havoc (2005) .... Eric
Warm Springs (2005) (TV) (as Matthew O'Leary) .... Fred Botts
Brick (2005) .... The Brain
The Alamo (2004) .... Boy in Store ... aka The Alamo (Philippines: English title)
Spy Kids 3-D: Game Over (2003) .... Gary Giggles ... aka Spy Kids 3: Game Over (USA: video title)
Spy Kids 2: Island of Lost Dreams (2002) .... Gary Giggles ... aka Spy Kids 2: The Island of Lost Dreams (USA: video box title)
Frailty (2001) .... Young Fenton ... aka Dämonisch (Germany) ... aka Frailty - Nessuno è al sicuro (Italy)
Domestic Disturbance (2001) .... Danny Morrison
Mom's Got a Date with a Vampire (2000) (TV) (as Matthew O'Leary) .... Adam Hansen
Self:
Building 'Brick' (2006) (V) .... Himself
"Total Access 24/7" .... Himself (1 episode, 2002) - Spy Kids 2 (2002) TV episode .... Himself