*Buys glasses and puts them on.*Me: Alright Glass, now make my life as exciting as the ones in the ad.
Glass:
Invalid command or filename. 
Seriously though, this could be used for a lot of good things too, with proper programming. Those of us who are so visually impaired that even regular glasses won't help could use a zoom function, or a function that helps you identify what bus is coming, or one that enhances the image through software, or one that helps you identify who's coming, etc. Geordi Laforge would be VISORless in comparison.

Also, this could eventually be of use to help locate missing people and to help law enforcement. If you connect the glasses to a proper database, face recognition could warn the authorities that you've seen a fugitive or a missing person, report your location at the time and transmit all the relevant footage. (All of this requiring your own approval, of course.)