And recently I've started using my right leg as a kind of third arm. For opening doors, pushing elevator buttons, stuff like that.
I can raise a single eyebrow - but only the one (my left). I trained myself to do this a number of years ago, I couldn't raise my eyebrow singly before, and was jealous of people that could.
I can move my eyeballs independantly, to a certain extent. Coupled with my terrible posture, makes for great Igor impressions.