Paul Attanasio Creator Richard Belzer Detective John Munch Actor Andre Braugher Frank Pembleton Actor Giancarlo Esposito Actor Clark Johnson Detective Meldrick Lewis Actor Yaphet Kotto Lieutenant Al Giardello Actor Kyle Secor Detective Tim Bayliss Actor, Director Reed Diamond Mike Kellerman Actor Michelle Forbes Dr. Julianna Cox Actor Michael Michele Actor Callie Thorne Laura Ballard Actor Jon Seda Paul Falsone Actor Peter Gerety Stuart Gharty Actor James Earl Jones Felix Wilson Guest Star Rick Warner Guest Star Steve Burns David Tarnofski Guest Star Charles Durning Guest Star Toni Lewis Terri Stivers Actor Reg E. Cathey Bernard Weeks Guest Star Hazelle Goodman Georgia Rae Mahoney Guest Star Sam Valle Johnnie Ramirez Guest Star Barry Levinson Executive Producer Tom Fontana Executive Producer, Writer Eric Ellis Overmyer Writer David Simon Writer Darryl LeMont Wharton Writer Noel Behn Writer Linda McGibney Writer Anya Epstein Writer Nick Gomez Director Julie Martin Writer Uli Edel Director Mary Harron Director Steve Buscemi Director Ed Bianchi Director Alison Maclean Director Alan Taylor Director Larry Williams Director