I am not the greatest keyboard player in the world, but seeing the YouTube demo of the Roland VP-770 keyboard makes me wish I was.  The guy doing the demo is Ed Diaz, a regular presenter at the Roland booth at the conventions I have attended.  He's a lot of fun to watch no matter what equipment he is working on, but seeing him play with the vocalization features of this new device is really cool.  Check it out on YouTube and find out more about the VP-770 on Roland's web site.