I can't stand Clooney as a person, or an actor. I avoid his movies like the plague. Thank god for Christian Bale saving Batman...
I thought he was really good in "O Brother Where Art Thou." It worked so well because his character was supposed to be an arrogant prick. The director must have told him "Just be yourself, George." Other than that small exception, I totally agree. 
"I dont use palmade, I like Dapper Dan!"
My favorite exchange from that movie:
Pomade Vendor: I can get the part from Bristol. It'll take two weeks, here's your pomade.
Ulysses Everett McGill: Two weeks? That don't do me no good.
Pomade Vendor: Nearest Ford auto man's Bristol.
Ulysses Everett McGill: Hold on, I don't want this pomade. I want Dapper Dan.
Pomade Vendor: I don't carry Dapper Dan, I carry Fop.
Ulysses Everett McGill: Well, I don't want Fop, ******* it! I'm a Dapper Dan man!
Pomade Vendor: Watch your language, young feller, this is a public market. Now if you want Dapper Dan, I can order it for you, have it in a couple of weeks.
Ulysses Everett McGill: Well, ain't this place a geographical oddity. Two weeks from everywhere!