Pete linked to this Aya Matsuura fansite in my comments. It’s nicely laid out, and seems to cover her career quite comprehensively. My favorite part is the DVD review section, which includes a 評価グラフ that rates each release by:

• あやや度 - how much Aya?
• ウキウキ度 - how cheerful is it?
• ニヤニヤ度 - are there lots of smiles?
• 泣ける度 - how sad is it?
• 芸術度 - how artistic is it?

Being a purely subjective scale, many of them go beyond 100%. This one’s Ayaya-do is off the charts. I can’t imagine why…