Clooney Purges Food, Ex-GF from Life

"ER," "Batman," his bulimia diet secret -- almost no subject was off-limits with George Clooney yesterday when he landed in D.C.

The only thing he wouldn't touch: Rumors of his ex-gf Sarah Larson downgrading to D-list Ashlee Simpson ex Ryan Cabrera. Yeah ... that pretty much speaks for itself.