The Xbox live vision camera is due out soon (6th Oct),
order from play and get the vision camera + Uno + 1 months live gold + 360 headset for £29.99 or for an extra £20 you can get 12 months Xbox live gold (£49.99), which is cheaper than the ebay live subs.!!
Apparentley the pics it takes can only be seen by people on your friends list, so should narrow the obvious silly shenanigans that will surely be attempted.
The Xbox live vision cam can also be used as a pc webcam, so you could kill 2 birds with 1 stone.