The Last Mimzy: Cute, family movie. Highly improbable, extremely far fetched, but cute. It's a good family film aimed at catching the older children's attention. I'd recommend it.
Premonition: Yeah, not Sandra's finest. But (in my opinion) better than the Lake House. The disjointed timeline was even easy to follow. The only thing I outright hated was the ending.
Black Snake Moan: The beginning was good, it had such great potential, but then as it progressed that potential just kept slipping farther and farther away. If there's nothing else on or to do (like me, tonight), then I'd say watch it. Otherwise, wait till it comes to a movie channel near you.