I pretty much love every single one of her PVs, but here's my 3 favorites:
ANGELS SONG:
There's absolutely NO resisting Ayu turned werewolf fighting bankrobbers in Angel's Bank! And she look so breathtakingly beautiful in that white dress, And the song, gawd I LOVE it!
DEPEND ON YOU:
I think this is a really stylish PV with its cold blue colors, and Ayu just standing there with wind-blown hair in that rocky, desolate setting singing (another one) of my favorite songs.
GREATFUL DAYS:
This cool video just delivers the party feeling of the song really well. There's a girl dancing in this video, that almost steal the attention from Ayumi.
Almost... Cause when you set eyes on Ayu sitting there on the couch with the curly hair and all, you forget about everone else... (Better watch out for the croc!) And the chorus that will knock you OUT. You're not an Ayu-fan if don't like this! Even if you don't like music at all you will love this!!
chill bro. I'm saying in terms of popularity. 
Ayumi is as famous to Japan, as Britney is to America. Minus the quicky marriage and implants that britney's had which oddly enough still seem to bring her media attention. When you mention the word J-pop usually the first thing out of many peoples mouthes is Ayumi. So they're both extremely famous. I'm not really a fan of either but, basically you gotta admit that they are both probably two of the most famous people in the world. Ayumi was even in Forbes magazine (an american magizine for the wealthy and affluent among us) and they talked about how rich and famous Ayumi was. 
