After being beaten into a brain-damaging coma by five men outside a bar, Mark Hogancamp built a 1/6th scale World War II-era town in his backyard. Mark populated the town he dubbed "Marwencol" with dolls representing his friends and family and created life-like photographs detailing the town's many relationships and dramas. Playing in the town and photographing the action helped Mark to recover his hand-eye coordination and deal with the psychic wounds from the attack.
Here's the trailer for the documentary about Marwencol:
As I write this, the film is streamable on Kanopy, the terrific streaming service that's free to sign up to with most library cards.
And you can visit Mark's website at Marwencol.com.
Update, 2018: they made a pretty bad movie out of this, starring Steve Carrel.