Has anyone seen any interesting keyboard-plus-multitouch hybridization? For illustration, say left hand on kbd and right on a graphics tablet? Or laptop touch

Has anyone seen any interesting keyboard-plus-multitouch hybridization? For illustration, say left hand on kbd and right on a graphics tablet? Or laptop touchpad thumb-based modifier keys? Or, less likely, interesting things to do when keycaps are touchpads? Last year I was working on optical finger tracking to get 3D positions and entire keyboard as a multitouch surface. It's not clear I want to continue banging on it this year. So I'm fishing for an "oh, that's a neat idea... ok, yes, I do want that" motivating instance.