:44 second video
So my dad got my son one of these Air Hogs remote control helicopters, which turned out to be a lot of fun when they're trimmed properly (which allows them to hover rather than just spin - as you can see as it degrades toward the end of the video). Anyway, I've been having more fun with it then he has as you can see here. The cat loves it, and in putting together the various clips to make this video, every time I played a clip, she'd hear the rotors spin and come running in to play.
Go kitteh, go!