NBC is pulling the plug on incredibly long-lived medical drama ER. The show, once a blockbusting hit, has seen ratings and interest dwindle in recent years, and its currently-airing 15th season will be its last. But a warhorse like ER deserves a hero's farewell, and it looks like it's going to get just that in the form of visits from stars past.

Noah Wyle, who played Dr. John Carter in the show's first through 11th seasons, is returning for a four-episode arc and has confirmed to TV Guide that Eriq La Salle will also return as Dr. Peter Benton. Of even more interest to ER devotees and fans of silver-fox movie stars, Wyle teased the return of George Clooney as the original "McDreamy," Dr. Doug Ross.

"From what I heard, George said, 'absolutely,' schedule permitting," Wyle stated.