http://www.youtube.com/watch?v=UQ0rIr_405c
I hate it when Hollywood assumes the dumbness of Americans. 9 times out of 10 actors in Hollywood 'swords and sandals' flicks have English accents (even if not English, a la Gylenhaal in PoP). Though sometimes they have Scottish accents (a la Gerard Butler in 300). As if we find it more historically accurate if Commodus orders the destruction of Maximus with an English brogue.
Also, there were a lot of blue eyed Persians in that trailer...