I know this is a little late...but I was just going through an old stack of business cards and found one that Dave had given me about 10 years ago when I was his student at Full Sail.
I remember one session he played the DM for our class and setup a short campaign for us to play through. Myself and about half of my class was involved in a D&D campaign together 2-3 nights a week so we had an absolute blast. He also gave me the bag of D&D dice that I use to this day.
He was a true visionary that didn't get nearly the credit he deserved.