I met Adam Savage at the EG conference last year, and watching him give this talk, it became clear the man is obsessed with replicating things 3D things from 2D imagery.
Things like a skeleton of a dodo bird or the maltese falcon. And he does all this in his spare time. (Being pretty good at making thing from nothing, since he worked as a prop designer for many years before being on TV.)
[I enjoyed EG for the day I was there. If you're interested in going next year, and mention you read about EG on Giz, they've got a friends discount for you when you sign up.]