Arduino + Video Camera?

Anyone here connected one of these guys to an Arduino for anything useful?

Small 1/4" CMOS Camera - AV output

"Auto switch"

How does it know?

I was just reading about this today, a video analysis shield, only $30. Video Experimenter: Arduino shield that lets you do all kinds of experiments with video
different projects with it: Video Experimenter Projects

That's pretty cool, thanks for the link!