Hey Ralph, I recognize some of my past creations in your youtube videos! Glad to see someone using them :)
Particularly these:
www.youtube.com/watch?v=HlWpPze9PKMwww.youtube.com/watch?v=CFmSkhEXCwgand several others. (Speaking of the chessboards, only--I'm sure I had a hand in editing some of the pieces, too, but they are not my creations).
Cheers!