https://www.youtube.com/v/wm7SKIlyNuU
I cannot tell you how long I've been trying to re-find this for! I remember reading an interesting blog about him years ago on the internet but my google-fu was turning up nothing for months. (Also, search criteria that contain the term "scat" are fraught with difficulties)
Anyway. here's that blog I mentioned above where some guy tracks him down to a nursing home and befriends him http://www.keyofz.com/shooby.htm
and here's a website with lots of links to his other stuff http://www.shooby.com/
And here's a video of him being booed off stage at The Apollo http://www.youtube.com/watch?v=MutYIgL4Gbk