Television:
* "Baby Daddy" (2012-2017) - He starred as Ben Wheeler, a former professional hockey player who unexpectedly becomes a father. This was his breakout role and made him a household name.
* "The Astronauts" (2021) - Played Sam, the mission commander, in this series about a group of astronauts on a mission to Mars.
* "The Librarians" (2015-2018) - He had a recurring role as Flynn Carsen in this fantasy series.
* "The Exes" (2011-2015) - Played the role of Phil, a guy who lives with his best friend and is always getting into trouble.
* "Friends With Benefits" (2011) - This was a short-lived series where he played Justin.
* "CSI: Crime Scene Investigation" (2009) - He had a one-episode appearance in this long-running crime drama.
* "The Vampire Diaries" (2010) - He had a one-episode appearance as the character of "Luke" in this supernatural series.
* "90210" (2009) - Another one-episode appearance, this time in the reboot of the classic teen drama.
Movies:
* "The Prince" (2018) - Played the role of Jason in this action thriller.
* "The Perfect Catch" (2016) - Played Josh in this romantic comedy.
* "The Bounce Back" (2015) - Played the role of Matt, a man who is going through a divorce.
* "The Wedding Ringer" (2015) - Played a small role in this comedy starring Kevin Hart.
* "The Internship" (2013) - He played the role of "Billy" in this comedy featuring Vince Vaughn and Owen Wilson.
This is not an exhaustive list, but it highlights some of Derek Theler's most notable roles. He has appeared in a variety of projects, showcasing his talent for both comedic and dramatic roles.