From Wikipedia, the free encyclopedia Brian Dietzen (born November 14, 1977) is an American actor who has played the supporting role of Jimmy Palmer on NCIS since 2004. In 2012, he was promoted to season regular at the beginning of the show's tenth season. Dietzen was born in Barrington, Illinois. Later, he studied theatre at the University of Colorado at Boulder's BFA acting program.

• NCIS (2003)

  
• From Justin to Kelly (2003)

  
• One Minute Time Machine (2014)