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... although this isn't my favourite Weird Al music, it's still pretty funny (honestly, even a "weak" Weird Al song still is much better than most) and the music video you've made (which I had already seen on youtube, btw) is really good. Although you kept your "unique" stlye, it fits the music well, and, of course, it's very well drawn and animated.
More importantly, the humor of the movie was in "perfect harmony" (well, that's a slight exageration) with the music, exagerated (as it should, with Weird Al) and pretty funny. Yeah, only "pretty funny", but in all honesty, I actually think that the music is the "weak" link here, you did pretty much everything right!
Of course, even though even single review is going to mention this, the RAB cameos were great! Oh, and I also found the (small) extra scene interesting, but you should have shown us more of the game! It wasn't enough to get any feeling of how it looks and works (etc) and, thus, it didn't make curious enough to go check it out. In any case, cheers and 'grats on actually making a Weird Al video!
One little question, though (although I don't expect you to answer, given the huge number of reviews I'm expecting), how much input did Al give into the music video? Did give you a free hand, or did he pretty much tell you everything?