US only...does the actor hugh lawrie have a convincing american accent in the TV series House?

omg omg omg omg omg yeeeeeeesssss i would have never in a million yrs guessed he was british if i didnt hear it. i saw him on the golden globes and i was like wtf is with the accent then he talked about being british and i was like wow! thats why hes paid the big bucks!!!!! great actor! =D