Working in the VFX industry I'm always on the lookout for new technology or techniques. Yesterday I came over this new system for doing motion capture that shows a lot of promise.
Basically, instead of using infrared cameras and ping pong markers or magnetic sensing, this system consists of several ir projectors and active sensors on the wearer. Apparently it doesn't have any limitations on the number of tracking points and it has absolute addressing on each tracking point so the usual issues with optical tracking is not so much of an issue. A basic setup will cost around $1000, in basic hardware costs, which is really cheap for this kind of equipment.
Now we only have to wait for it to be commercialized. Hurry up please :)