I came across this thanks to a Deadspin article and I have no idea how this hasn't unsurfaced already, but it's worth watching for entertainment purposes. It looks as though it's from Gus' high school coaching days. On the Youtube video description, it states that there's a copy of it on the "2001 Springdale High School Highlights DVD created by Mark Young."
It's a good laugh. This should definitely be played on the video board at Auburn games.
Malzahn - U Can't Touch This
MC Hammer - U Can't Touch This
You can't even make this kind of stuff up. Love it.