I have just fallen in love:
The Kaossilator here
And the mini-Kaos touchpads effects processor here.
Oh! How I want one of each! They make me drool with desire! Maybe just one of one will do, but, they’re a little out of my price range ($200) so for now, I’ll have to satisfy myself with other peoples’ cool youtube videos and sound bites.
Apparently, our Mac Mini has something like this already on it (so my husband says). Now, if only I could find it and figure out how to use it!