I thought DataGloves already exist?
stuff like this: http://www.cyberarium.com/flyers/flextender/flextender.html
Like the others say, doing the sensors for the whole body shouldn't be all that hard.
Heck, my Playstation has a motion capture camera too, no special gear required. Of course, that is only 2D capture.
There are other motion capture devices...
http://express.howstuffworks.com/gollum3.htm
LOL, like a wetsuit with sensors!

This thingie http://www.animazoo.com/products/gypsy5.htm supposedly works with Maya. No price listed, that I could find. I doubt it's few hundred bucks. Probably add-a-zero

Hi, my namez: "NO, Bad Kitteh, NO!"  Whaz yurs?
BadKittehCo Store  BadKittehCo Freebies and product support