Average. Would be nothing without the music.
It says it all really. Some of the graphics are in actual fact good, but a lot looks rushed, badly tweened etc. This flash would be a lot more deserving of the number 1 spot if there was some more effort put into the graphics - as it stands I don't think it should be top 10 material - perhaps top 100 material.
I think all of your fanboys have thought 'OH MY GAWD, THAT'S A WIKID SONG' without realising that there are much more quality submissions on the top 50 - that get downvoted because they want 'popular' submissions like this on the top.
You should be grateful that your fanbase has got this up so high. Because I personally think that this is average. Not fascinating, not excellent, just average.