I'll change my name to Bin Laden and watch the Bush's scramble to protect me.

Failing that, they're's always the evil dead way- chainsaw, axe, shotgun. But Personally I think a Katana for short range, (off with the head) aa .357 magnum or a desert eagle, and for long range, say go with a colt M-16. Or HK MP5. 12 gauge shotgun perhaps as well, any shotgun is good, it doesn't matter as long as you know how to use it, it's size and power fits you, and the shells are easy to obtain.