3D w/o Glasses

http://www.technologyreview.com/computing/25524/?a=f

Sunglasses Camera

http://www.buy.com/prod/phazzer-3-megapixel-dvr-eyewear-sunglasses-digital-video-recorder/q/loc/111/listingid/85532306/215865024.html?adid=17654#moreimg

For hands free recording use the Camcorder DVR 3 Megapixel Eyewear! These stylish DVR eyewear sunglasses have a built in 3 megapixel camera and DVR with micro switch controls right at your finger tips. This unique camcorder system will view and record what the user sees without wires and hands free. The audio is captured at a limited range, but is excellent for commentation done by the user. The primary use is to record video for winter and summer sports activities, school programs, family events, hunting and fishing and many other life experiences. The video is stored on a 4 GB Micro SD flash memory card. Play back is easy using your PC via USB or Flash Card reader and requires no additional software. SD Flash Memory Card adapter included.
 
Features

	3.0 megapixels pinhole CMOS camera and built in stereo audio microphone.
	Allows up to 4 hours of video recording per charge.
	Polarized lenses to reduce sunglare.
	Uses a 4 GB Micro SD Flash Memory Card.

gesture-based computing

http://www.newscientist.com/article/mg20627635.100-thumbs-up-for-gesturebased-computing.html

Study of Strains Place on Hands by Multi-Touch Devices

http://asunews.asu.edu/20100608_multitouchdevicestudy

Jaw Bone

This does a real good job of killing the external noise.

http://store.jawbone.com/store/aliphcom/DisplayHomePage

Uses NoiseAssassin.

Imaginary Interface

http://www.msnbc.msn.com/id/37580233/ns/technology_and_science-innovation/

This looks like it might have some potential.  Uses a camera to capture gestures.