Here's a fun site where you can be a drag-and-drop modern keyboard composer: http://www.keyboardwizard.net/ Put together by Dream Theater's Jordan Rudess. Have fun!
A quickie bump, did anyone fool around with this? I think it's pretty neat, haven't seen anything like it.
I wonder if there are any other sites similar to this one? It reminds me in a way of the U-Myx thing that was popular a while back. Anyone play with any of those? http://en.wikipedia.org/wiki/U-MYX