Steven Bochco Creator, Executive Producer David Milch Creator Dennis Franz Det. Sgt. Andy Sipowicz Actor Mark-Paul Gosselaar Det. John Clark, Jr. Actor Gordon Clapp Det. Greg Medavoy Actor Henry Simmons Det. Baldwin Jones Actor Bill Brochtrup John Irvin Actor Jacqueline Obradors Det. Rita Ortiz Actor Currie Graham Lt. Thomas Bale Actor Bonnie Somerville Det. Laura Murphy Actor Alan Rosenberg Barry Olshan Guest Star Carlos Gomez Anthony Perez Guest Star Saverio Guerra Lenny Russo Guest Star Craig Walker Pat Donatelli Guest Star Jennifer Jostyn Teresa Donatelli Guest Star Michael Pasternak Aaron Zell Guest Star Ken Lerner Norman Hanes Guest Star Boris Krutonog Misha 'Russian Mike' Noishikov Guest Star Brady Rubin Margaret Gregorek Guest Star Nealla Gordon Esther Zell Guest Star James Martin Kelly Chief Duffy Guest Star Olga Vilner Paulina Guest Star Debi Mazar Maxine Annunziato Guest Star Alex Veadov Sergei Yesenin Guest Star Joanne Rubino Nucci Guest Star Serena Spencer Customer Guest Star Joseph Carbery Uniform Guest Star Ron K. Collie E.M.S. Guest Star Mark Tinker Executive Producer Bill Clark Executive Producer, Writer Keith Eisner Writer Rick Wallace Director