George Clooney: Back on ER!

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In television's worst kept secret, George Clooney returned to ER last night.

The actor returned to the role that made him famous: womanizing, stubborn Dr. Doug Ross.

Clooney slipped right back into the character, as he starred mostly in scenes opposite a grief-stricken Susan Sarandon. Watch the powerhouse stars in a clip from the show below:

[video url="/videos/george-clooney-on-er/" title="George Clooney on ER"] [/video]

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.