Absolutely classic.
The sheer number of reviews for this flash speaks to its superiority
-- but i'll indulge a bit:
The music is top-notch, Lemon Deamon's "Ultimate Showdown" was carefully crafted, and is therefore perfect for such a music video.
"Ultimate Showdown" is a blood orgy of the greatest and numerous - committed to mortal combat for unknown, but consequently hilarious reasons.
-Optimus Prime gets whats coming to him (silly pacifist)
-Zombified Abe Lincoln blows Batman away with an AK47
-Chuck Norris
-TWO Gandalfs
-A victorious Mr Rogers dirties his cardigan, is compelled to commit seppuku.