Scamming the scammers -- catching the virus call centre scammers red-handed

"Ever have one of those calls from the other side of the world where the person at the other end of the phone claims your PC has got a virus and they can fix it up for you? I had one recently and played along with the operator while recording the episode, right up until they want to take remote control of the machine. But it left me wondering; what happens once they get control? So I decided to call them back and let them do *whatever* they wanted while recording both screen and audio."