ER (TV Series 1994-2009), 15 Seasons, 331 Episodes http://www.imdb.com/title/tt0108757/ The work and lives of a group of emergency room doctors in Chicago. Creator: Michael Crichton Stars:Anthony Edwards, George Clooney and Julianna Margulies Cast Series cast summary: Noah Wyle ... Dr. John Carter (254 episodes, 1994-2009) Laura Innes ... Dr. Kerry Weaver (249 episodes, 1995-2009) Laura Cerón ... Nurse Chuny Marquez (219 episodes, 1995-2009) Maura Tierney ... Nurse Abby Lockhart (189 episodes, 1999-2009) Deezer D ... Nurse Malik McGrath (188 episodes, 1994-2009) Goran Visnjic ... Dr. Luka Kovac (185 episodes, 1999-2008) Yvette Freeman ... Nurse Haleh Adams (185 episodes, 1994-2009) Anthony Edwards ... Dr. Mark Greene (180 episodes, 1994-2008) Eriq La Salle ... Dr. Peter Benton (172 episodes, 1994-2009) Emily Wagner ... Doris Pickman (167 episodes, 1994-2009) Alex Kingston ... Dr. Elizabeth Corday (160 episodes, 1997-2009) Lynn A. Henderson ... Pamela Olbes (149 episodes, 1995-2009) Sherry Stringfield ... Dr. Susan Lewis (142 episodes, 1994-2009) Abraham Benrubi ... Jerry Markovic (140 episodes, 1994-2009) Mekhi Phifer ... Dr. Gregory Pratt (135 episodes, 2002-2008) Julianna Margulies ... Nurse Carol Hathaway (135 episodes, 1994-2009) Parminder Nagra ... Dr. Neela Rasgotra (129 episodes, 2003-2009) Troy Evans ... Frank Martin (129 episodes, 1994-2009) Lily Mariye ... Nurse Lily Jarvik (127 episodes, 1994-2009) Linda Cardellini ... Nurse Samantha Taggart (126 episodes, 2003-2009) Paul McCrane ... Dr. Robert Romano (125 episodes, 1997-2008) Ming-Na ... Dr. Jing-Mei Chen (118 episodes, 1995-2004) Montae Russell ... Dwight Zadro (117 episodes, 1995-2009) Ellen Crawford ... Nurse Lydia Wright (113 episodes, 1994-2009) Conni Marie Brazelton ... Nurse Connie Oligario (113 episodes, 1994-2003) Scott Grimes ... Dr. Archie Morris (112 episodes, 2003-2009) George Clooney ... Dr. Doug Ross (109 episodes, 1994-2009) Gloria Reuben ... Jeanie Boulet (102 episodes, 1995-2008)