American Accent

[James Boston]

Quasi-inspired by El D's thread where some British guys are talking about the way they pronounce words...

There are several British actors who play roles that require an American Accent, Colin Ferrel and the guy who plays on House come to mind. For any non-American OOT'ers, what would you alter when trying to do an American accent? I've never really thought about it, and am curious.

Also, if you're from America, as most of us are, feel free to chime in with any thoughts.