Spy Sunglasses

If using sunglasses to check out the girls on the beach isn't quite enough, and you need to replay your view afterwards, this is the solution for you (but maybe you really need some psych counselling, or just your own girlfriend?).

$400 and a 15 metre range back to the receiver, which has 2GB of storage, along with playback, and it looks like you can hook up multiple cameras to it. Hours of fun for someone, I'm sure.