Pokemon Battle Revolution - 135,115
The Darkness - 110,818
Wii Sports - 93,253
Overlord - 79,014
Pokemon Diamond / Pearl - 63,882
The Darkness - 52,632
Transformers The Game - 51,345
Statistics are from the first week release of all the games on the list, with the exception of Wii Sports (33 weeks) and Pokemon Diamond / Pearl (11 weeks) that's still selling strongly even after being out for several weeks already.
American Chart for Week Ending 01st July 2007
In a swedish interview, Johan Kristiansson, CEO of Starbreeze, mentions that the game was never supposed to be released for the Asian market (since western games doesn't fare too well over there), but after the first successful week in the states, Take 2 (our publisher) decided that it should be released there aswell.
In the same interview, it's mentioned that Starbreeze stock has risen over 90% the last three months. That's nice :)