Computer vision progress?

It would be great·to have a robot recognize my voice and my face. In my imagination this robot could spot me in a crowd and even return to a recharging station when it sensed its current was droppng. How close are we? What's been done so far?
Comments
Not sure this temporary offer to buy it for "half price" ($39) is still good. http://www.roborealm.com/woot/rovio.php
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·"If you build it, they will come."
For more info on facial recognition see:
http://en.wikipedia.org/wiki/Eigenface
http://scholar.google.ca/scholar?q=eigen+face+recognition&hl=en&as_sdt=0&as_vis=1&oi=scholart
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·"If you build it, they will come."
For Stereo vision look at the Surveyor web site (Surveyor.com). I believe Roborealm(Roborealm.com) will interface with the Surveyor Stereo Vision System.
Also for stereo vision hardware($$$) look at videredesign.com