Here's an interesting "control surface" for
software folks I hadn't 
  seen before: 
     
  http://www.thinkgeek.com/computing/keyboards-mice/77ba/ 
     
  At $140 it isn't exactly cheap, it isn't really large (or
durable) 
  enough for a footswitch, and it isn't backlit like the
Launchpad. 
  (Okay, maybe it isn't that interesting...:) 
     
  Still, the ability to configure your own switch layouts to 
  build "instruments" could be useful. 
     
  Jeff