I'd want the Fat Man from Fallout 3. Nothing like having your own portable mini-nuke launcher. 
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Blah, just now saw this. Although, I like the name Fat Man better, so I'd still stick with the Fat Man... and it has a funny name. >.>

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Edit:
MechMike Wrote:The Experimental MIRV from Fallout3
Blah, just now saw this. Although, I like the name Fat Man better, so I'd still stick with the Fat Man... and it has a funny name. >.>

