I'm surprised by how many people list a revolver AND a semiauto pistol. For me, I'd rather have more selection amongst rifles than handguns. It would be interesting to hear some feedback from the folks with the taste for multiple handguns on so short a list. Anyway, for my picks....
1. Defensive caliber handgun... anything from .38 on up, whatever floats your boat
2. Shotgun... semiauto or pump, 12 or even 20 ga. if you can handle it better
3. Battle rifle... Buy American, get the AR15
4. Hunting rifle.... 30-06 is the popular choice, but I think a 270, 300, 7mm, etc could substitute
5. The swing spot.... nearly everyone throws in some kind of .22lr here, I can agree with that, or sub. for another of the most useful and time proven rifles out there, a 30-30 lever action. There was another thread that had something to do with the most useful rifle out there, and it seemed like the 30-30 Marlins and Winchesters were the unofficial winners, so it's surprising to me that they get so little attention here!