THE TRASHMASTER: an 88-minute film made from Grand Theft Auto IV
So this French guy, Mathieu Weschler, spent two years playing Grand Theft Auto IV on a PC, saving clips of himself playing it, and turning those clips into an 88-minute feature film called The Trashmaster. It's about a renegade garbage collector who takes revenge on a serial killer (not an outlandish premise in the world of GTA).
Best of all, he made the entire film embeddable. So here it is: