If you live in SoCal, and you preordered a copy of GH2 for the 360, which is supposed to be in stores this coming Tuesday, you already have a copy in your console, you lucky dog!
Check this guy out:
http://live.xbox.com/en-US/profile/Achievements/ViewAchievementDetails.aspx?tid=%09%5d%3a%60m%2fl4%07%03&compareTo=DanoBeoWulf