Watch: George Clooney Returns To ER

George Clooney has come a long way since his days as a sexy young doctor on ER. His career trajectory has taken him to the limits of stardom, catapulting him to A-list status. But last night on ER, Clooney navigated back to his roots by reprising his role as Dr. Doug Ross, and leading scores of other guest stars from the ghosts of ER’s past. Catch clips of his appearances above and after the jump.

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