He is best known for his role as probie firefighter "Damien Keefe" on the FX Network television drama Rescue Me, as well as his recurring role as "Dwight the Troubled Teen" on over 50 episodes of the Late Show with David Letterman. He is a graduate of Skidmore College and a member of the New York City sketch comedy troupe "Hottie$ Galore."
Zegen's role on Rescue Me began as a recurring character in Seasons 1-3, playing the nephew of series lead Tommy Gavin (Denis Leary). In Seasons 5-6, he was promoted to the main cast when his character began probie school to become a firefighter.
- Rescue Me
- Taking Woodstock
- The Girl Next Door
- Boardwalk Empire