In all seriousness - nuke plants don't have an off button. Once you "stop" them, you still have to make sure they cool for hours - otherwise, you can have big problems. From what I hear, they're having issues with some of the back up systems that cool the cores....scary stuff.

ETA: Of course, I'm worried about our friends in Japan too. I was bleary eyed when I posted, and knew about the tsunami warnings, but not the quake that caused them....