Ask YC: Apple Camera Hack? Peeping Tom 2.0?

I was in a cafe the other day and while using their open wireless decided to get some work done. As I surfed the web... all of a sudden the light on my MacBook Pro Camera turned on!

I was not using any application or program that would make this happen. There were some crazy lookin techies in the room and I got kinda freaked... was it possible for someone to create a Mac Camera Hack?

Is it possible to even make an application where as the light would not even go on to tell me it was in use?

Creepy.