I remember seeing on some TV crime programme the output from a Video Camera someone nicked from the electrical shop (Visionhire in Lewisham, IIRC) that the theif didn't realised was hooked up to an external recorder.. He looked right into the lens..
Anyway, thieves aren't the only ones who are thick, Security System designers sometimes are as well..
http://www.theregister.co.uk/2004/06..._cctv_cameras/
Edit: Ahh, I knew I'd posted it before:
http://www.cableforum.co.uk/board/24...so-cheeky.html