I was looking into buying a webcam recently and noticed that Logitech has software that allows some of their cams to read facial expressions and transfer those, to one degree or another, to an animated avatar.
I don't know how effective it is, probably not hugely so... but if that kind of mocap is possible, I'd love to see even gross movement capture available with Crazytalk, or iClone4 or later. Letting the user 'act' out the expressions he wants would be awesome, even if we had to go back and fine tune them manually afterwards.
Granted, even if this works it would probably have some steep requirements for the cam and other things, but I'd buy it. Well, as long as it didn't require a new mortgage or something.
Anyway, maybe just a pipedream, but there it is.