this one looks sweet
http://www.youtube.com/watch?v=iKSXPsLJ6f8
it’s a touchscreen with knobs sticking out of it? 
Wtf? Looks like a lot of unnecessary crap. That’s just my opinion though.
it is sort of cool. though i’m not sure it is that necessary for most stuff.
in a parallel universe where the only way to use the software is normally with control surfaces like these, there is a video of an amazing example of where you just click onto different pages within the software and adjust the controls with the mouse. everything can be accessed almost instantly with every single control imaginable, you adjust them all on screen and no need to clutter your desk with giant touchscreens. of course it costs thousands of pounds.
Why not just get a touchscreen and put Renoise on it? 