Over on Boing Boing Gadgets, our Joel's spotted this half-ton Rube Goldberg corkscrew by artist Rob Higgs:
Rob Higgs is an artist who makes extraordinarily convoluted machines – or at least one: the "Corkscrew", a self-cast monstrosity for gears and levers which does, unbelievably, actually work as a half-ton corkscrew for a bottle of wine.
I'll take two. (Which may be possible; as part of the One of a Hundred project, they may actually sell these things for lots and lots of money. But probably not.)