This needs the power of Lego Mindstorms!

Have a cat that won't stay off your counters? I do. I finally got fed up with it enough to do something about it: scare the crap out of him with a motion-detecting blender (while recording the results for my own amusement, of course).

- From Blender Defender, which I saw in a Twitter from Rands.

Worth checking out the videos :-)