Of Unknown Origin (1983)A lesser known movie from George Cosmatos, the director of Cobra, Rambo 2, Tombstone, and Leviathan, where Peter Weller fights…a rat. Not a supernaturally large or mutated rat. Just…a rat that I guess is an unbelievable overachiever that starts doing increasingly ridiculous things to Peter Weller. First it somehow kills a cat that was brought in to defeat it, then it somehow finds and chews up a check that some exterminators were meant to receive to come deal with it, then it even chews up Peter Weller’s important work presentation out of nothing but spite. It’s not the greatest movie ever. It’s more of a drama/thriller than straight-up horror, really, but it’s still better than the average man vs. evil animal B-movie.