American actor Brian Dietzen is renowned for his long-running role on the military procedural drama "NCIS" (CBS, 2003- ). A native of the Midwest, he got his start in theater productions and won his first screen roles while in his mid-twenties. After appearing on the short-lived comedy show "My Guide to Becoming a Rock Star" (The WB, 2002), Dietzen made his feature debut in the universally panned "American Idol" spin-off "From Justin to Kelly" (2003). These career setbacks swiftly receded, however, when he was cast in 2004 in the recurring part of nerdy technician Jimmy Palmer on "NCIS." While Dietzen occasionally moonlights in low-budget films, "NCIS" has remained his main focus, let him develop his slightly awkward character over numerous seasons on the consistently popular series.