Hugh Laurie of "House" does a damn good American accent. If I didn't know, I wouldn't know ;o).

Oh snap.

Gary Oldman does pretty well too, as long as he sticks to a New York accent...lol.

And even tho he's not a Brit, but an Irishman, Colin Farrell does really good ;o).

If you ask me, it seems that most (not all) British/Irish/Scottish actors do better putting on an American accent than most American actors do putting on a British/Irish/Scottish accent...lol. Could just be me tho ;o). But as Scottish actors go, Gerard Butler's American accent is dreadful...lol. Good thing he's really easy on the eyes...lmao.

Laurie