I also tend to move around to the groove of the music, in so far as I can while still playing, and try to look like I'm having fun. But the trouble with synths is that they create a barrier which prevents the audience from seeing you do that.
Another trick I'm considering is using my Alesis ControlPad drum pads on some songs. Just for the odd hit here and there. As a solo performer, though, I'd be doing that at the expense of playing the keys and relying solely on the programmed sequencer parts. And that might pose a problem for some audiences - ie, "Hey, that guy's not actually playing the instruments."
Edited by comradec (01/04/11 12:23 AM)