I have had cats that learn to use door-knobs, and freak me out in the middle of the night, when I think someone has broken in. As for light switches, I thought they had good night-vision, and wouldn't need it?
Heres a few other things I'd like to see a cat learn...
My kitty needs to learn how to clean his own litter box!
Maybe he could be trained to pull wire too? Hmmm..... "Now I'm gonna tie this to your tail, and you go put it on the fish in the attic. Meow when you're ready to feed it in."
