Yeah, the Nightshot mode is present on pretty much all of the Sony Handycam camcorders...you should be able to find them pretty cheap in pawn shops or on ebay.
It works really well, too...basically, it just shoots in infrared.
You can even buy infrared add-on lights that will extend your shooting area.
Canon has a line that features "Color Night mode" which is supposed to give you pseudo color instead of all green, but I'm not sure how well it works.
I think it may slow down your shutter speed, which isn't desirable.
The Xray thing is pretty neat. It works because infrared light seems to pass through thinner clothes. You can enhance the effect by adding an IR Pass filter, which basically blocks everything but infrared light.
Back in about 1998, Sony changed the firmware of the cameras to disable the brightness control when using Nightshot...which makes everything you try to shoot in daylight very overexposed, completely blown out.
Of course, you can add additional filters (that act as sunglasses) to cut the light levels to get around that.
Incidentally, pretty much all camcorders and digital cameras capture some infrared light...there's usually a filter to cut it down (which is pretty much what Nightshot does...moves the filter out of the way).
Just point a remote control at your camera & press the button...see the light blinking at you? It's neato.
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