Movies:
* The Princess Diaries 2: Royal Engagement (2004) - Nicholas Devereaux
* The Sisterhood of the Traveling Pants (2005) - Eric
* The Ringer (2005) - Steve
* Supernatural (2005) - Zack
* Stay (2005) - Sam
* The Prince & Me 3: The Princess's Secret (2008) - Prince Michael
* The Prince & Me 4: The Elephant Adventure (2010) - Prince Michael
* The Prince & Me 5: The Royal Wedding (2012) - Prince Michael
* 42 (2013) - Jackie Robinson
* The Prince & Me 6: The Elephant Adventure (2014) - Prince Michael
* The Prince & Me 7: The Royal Baby (2016) - Prince Michael
* The Prince & Me 8: The Royal Wedding (2018) - Prince Michael
* The Prince & Me 9: The Crown (2020) - Prince Michael
* The Prince & Me 10: Royal Hearts (2022) - Prince Michael
* The Killing of a Sacred Deer (2017) - Martin
* The Iceman (2012) - Anthony "The Ghost" Grano
Television:
* The Shield (2002-2008) - Billy
* Numb3rs (2006) - Alex
* CSI: Miami (2006-2007) - Detective Russell
* Cold Case (2007-2010) - Detective Scotty Valens
* The Forgotten (2009-2010) - Agent Charlie Hume
* Chicago P.D. (2014-present) - Officer Adam Ruzek
* Law & Order: Special Victims Unit (2017) - Detective Adam Ruzek (cross-over episode with Chicago P.D.)
* Chicago Fire (2014-present) - Officer Adam Ruzek (cross-over episodes with Chicago P.D.)
* Chicago Med (2015-present) - Officer Adam Ruzek (cross-over episodes with Chicago P.D.)
This list is not exhaustive, but it covers some of his most significant and well-known roles.