Cast of ER Cast of ER "ER" is an American drama series that aired on NBC from September 19, 1994 until April 2, 2009. The series featured a large ensemble cast that changed dramatically over its long run. The main cast was augmented by a wealth of recurring characters and award-winning guest stars. The original starring cast consisted of Anthony Edwards as Dr. Mark Greene, George Clooney as Dr. Douglas "Doug" Ross, Sherry Stringfield as Dr. Susan Lewis, Noah Wyle as medical student (later Dr.) John Carter, and Eriq La Salle as Dr. Peter Benton. Julianna Margulies guest starred in the pilot as
Acclaim Entertainment where he worked together with Robert Holmes and Jim Scoroposki. He left Activision to join RCA Records, which was subsequently acquired by Bertelsmann and Fischbach found himself unemployed. In 1987, he met with Scoroposki in Oyster Bay, where Scoroposki owned a sales rep company, to discuss a possible shared venture. After Scoroposki suggested that the two should re-enter the video game business, they contacted Holmes to join them, and the three jointly founded Acclaim Entertainment. Their legal entity was incorporated on March 30, 1987. In its initial years, Acclaim was exclusively a video game publisher, either farming out the creation