I was just going to suggest University of Utah, but it seems that Calmlogic has suggested it already. Anyways, IMHO I think it's the best fit for both of you because it has the best computer graphics lab in the States ( that's what graphics guys said), in addition they have a great robotics group. Have a look on these links:
Robotics at the University of Utah
U of U School of Computing - Faculty & Staff Information