Oh yay another Amano thread!
I really do like his artwork, and I like most of his newer artwork (since 2000) better than his older, sketchier artworks (which seem to recieve the most negative criticism regarding his style), but I do enjoy those too. I've taken a look at many of his non-Final Fantasy and gaming artworks, and I definitely enjoy those as well. One day I wish I could go to an actual exhibition of his artwork.
I really adore his style, and find it fascinating. He's really influenced by style as well. I just love all the wild things he can dress his characters up in. He's really good at drawing people, as well.
The only 'artbooks' (if they can be considered such) that I have of him are the Nintendo Power Final Fantasy III Strategy Guide and the Sandman: The Dream Hunters by Neil Gaiman, which he did the artwork of. Both of them are fantastic, and I love flipping through them from time to time.
Well, enough rambling. If you want to see Amano artwork, this is a great website art gallery I always try to solicit when this topic arises:
http://yoshi taka-amano.kouryu.info/
You'll need to backspace there, as I don't know how to bypass the swear filter.