Would you want to use a hand-crank to charge your phone every single day? Definitely not. But hardware hacker Ben Heck's clever hand-crank mobile charger could certainly come in handy in those more survivalist moments in your life.
Heck doesn't offer a lot of details, but if you've got the electrical and soldering know-how and a hand-crank torch (the one he's using looks very similar to this $US10 model), his crank-charger is a really fun and clever idea. If nothing else, it'd be great to have something like this in your go-bag for emergencies (ranging from "ah bummer, my phone's dying and I don't want to wait an hour to get home to check my email" to "oh crap, I'm lost in the middle of nowhere and my mobile phone just died").