When I was younger, I used to think cut-down lever guns, a la Steve McQueen's "Mare's Leg" were just the coolest thing ever.
Now that I am older and actually know a little bit about firearms, I think they make about as much sense as a kickstand on a tank.
They still look cool though, and, y'know... Firefly. The worst thing is, there are people trying to sell me one now. (Well, I mean, they've always been available, but until now the whole NFA tax stamp thing was pretty good protection against dumb impulse purchases...)