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
Jeevan (Tamil actor) in "Kaaka Kaaka". Despite winning critical acclaim and receiving several offers to play the antagonist in Tamil films, Jeevan waited two years and opted against signing any more films since he wanted to play lead characters. In March 2005, he was offered the film "Thotta" directed by Selva and accepted to work on the film, though delays meant he had starred in other films as protagonist before it released. Following a three-year hiatus, he returned as an actor in the main role with Susi Ganesan's "Thiruttu Payale", which earned him praise. He signed up for the remake of the 1974