ER paged Dr. Ross—and he answered.
Sources tell E! News that George Clooney will be shooting scenes this week for an upcoming episode of the hit medical series, which is in its 15th and final season on NBC.
The network recently ordered up another three episodes of its stalwart Thursday-night drama, raising hopes that nabbing Clooney for a guest spot was one of the reasons for the extension.
Aw, George. Is there any humanitarian cause he won't support?
The Oscar winner last appeared on ER for an uncredited minute in 2000, a year after taking off to make movies full-time, to help tie up the storyline for Julianna Margulies' departing character, Nurse Carol Hathaway, who had twin daughters with Clooney's Dr. Doug Ross.
Life & Style quotes a source saying that Clooney and Margulies will reunite as "part of an effort to wrap up all of the original characters' story lines" and that their episode will air toward the end of February, during sweeps.
The Michael Clayton star's publicist didn't immediately respond to a request for comment. And an ER rep would not confirm other reports that Clooney would be shooting his scenes Thursday and Friday.
ER's series finale airs April 2 on NBC.
(Originally published Jan. 21, 2009 at 4:15 p.m. PT)