Gotta post again, because there's too much cool stuff on forgottenmichigan.com, metro-detroit urban exploring photo sharing site... beautifully haunting. Totally abandoned parts of the city. Surely there are uses for this besides indie film movie sets?
Check out this abandoned high school -- wow, you can do so much with it. They're like ready-made for a zombie slasher flick 28 Days Later-style, or maybe a post-apocalyptic Half Life 2 / Children of Men thriller.