iTunes doesn't have the Gary Jules version, but they do have about 50 other artists' renditions of the same song. I'm not even exaggerating! There are at LEAST that many completely different versions of the song available, is it public domain or something?
The Michael Andrews version from the Donnie Darko Soundtrack and the Sacre version (not on the soundtrack but listed as " From Donnie Darko"

) are closest to the version in the GOW commercial.