Mark was in one episode of NCIS in 2005, season 4 episode 16 "Pop Life", where he played Richard 'Blue' McGinty, the bouncer of nightclub boss 'Bulldog'.
After a night of partying, a dance club bartender wakes up in bed with a dead female Petty Officer while claiming this wasn't the same woman he went to bed. When it's determined that he was telling the truth, Gibbs and the team must find out who killed the Petty Officer and the victim's sister and a local businessman emerges as a possible suspect but all is not what it seems...
Episode: Season 2 Episode 16 "Pop Life"
Directed by: Thomas J. Wright
Written by: Frank Military
First Aired: 1 March 2005
Websites of Interest: www.ncis.wikia.com/wiki/Pop_Life_(episode)
Mark Harmon – Leroy Jethro Gibbs
Sasha Alexander – Agent Caitlin Todd
Michael Weatherly – Anthony DiNozzo
Pauley Perrette – Abby Sciuto
Sean Murray – Timothy McGee
David McCallum – Dr. Donald Malland
Mya Harrison – Samantha ‘Jade’ King
Steven Brand – Ian Alfred ‘Bulldog’ Hitch
Scott Alan Smith – Det. Mark Mauceri
Conrad Roberts – Benjamin King
Brian Dietzen – Jimmy Palmer
Kiko Ellsworth – Willie Taylor
Daya Vaidya – Summer Dimond/Keisha Scott
Shang Forbes – D.J. Night Trap
Mark Griffin – Richard ‘Blue’ McGinty
Tommi Delton – Police Officer (Norfolk,Virginia)