Well, I haven't done a cover yet, but I do have something.
Theorectically, if I was to take a DVD and synch the riff to it, I might remove the intro part, and then use an easily available program like say, Microsoft Movie Maker, to make a short little intro movie for the disc. Theorectically, of course.
You might also hypothesize that if I were to do this, I'd also add images to illustrate what the riffers are saying. You might also hypothesize that sometimes I'd get carried away with a throwaway line in the intro and spend more time illustrating it that I would actually making the intro itself. So, you might end up with something like this:

That ends up being shown for about 2-3 seconds. Hypothetically.
Oh, and the chibi Predator may have been borrowed from this deviantart page:
http://gb2k.deviantart.com/art/GBChibi-Predator-59879165But I can neither confirm nor deny such speculation.