By now you have probably heard of Google's Project Glass, their plan to put everything on the web in on your head. This is still in the planning stages and will probably not become reality for at least a year, but the idea is tempting as you can see in the video. The glasses wrap around your forehead and covers one eye so you can multi-task. Using Google maps for directions both indoors and out, sending and receiving messages, playing music and videos and, in general, doing other online activities, seems like a good idea, as long as you aren't driving at the time.
Being a prototype, Google is encouraging comments and suggestions so toss in your two cents on their site and they may just take you up on it.