What if Calvin of "Calvin and Hobbes" fame grew up? And what if, instead of leaving behind his talking tiger and visions of dinosaurs and life in outer space, those visions followed him, slowly turning him insane? Well, it would make for one heckuva movie trailer, that's for sure. At least, so thought the good folks at Gritty Remakes, who created a pseudo-preview featuring Calvin as a college-aged man with a lot of issues. He still talks to his imaginary friend. His mind still goes on flights of fancy. But these aren't journeys of whimsy. The adult Calvin is a...