So last E3 John Carmack came with a VR head-mounted display that he had been working on. Here's an interview with him talking about it.
Well now they're using kickstarter to try and get dev kits out, as well as get some general support I suppose. Looks like some real interesting stuff. I won't be donating, seeing as it's already well past it's goal, but I'm curious in seeing where this goes.