KKB Demo (actually called KKB First Demo) is a Demo made by Tom and Chilly of KKB and was released in march 1990. It featured a overscan screen with multiple splits showcasting hardware scrolling, animated split rasters, a hand-writing writer, tubular rasters and a big hi-res logo scroller on a very colorful screen.
The demo can be seen here: http://www.youtube.com/watch?v=YFRnnk-2vwo