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
No Place to Hide (ER) when he notices some earrings on his table. He leaves these at the hospital for Olivia. When she comes around to the ER Frank gives them to her. She admits they’re pretty - but they don’t belong to her. On the aeroplane Pratt starts to flirt with an attractive woman called Vatima. He tries to impress her with his profession and destination. She quizzes him on the problems in Darfur and Pratt's enthusiasm ebbs. When the plane lands Pratt holds up the line while his bags are searched. A paperback causes particular concern and Debbie has to step in to