I mean, ORIGINAL source like art books, magazines, CG from games, manga, doujinshi, pencil boards, or other stuff. What's everyone's perferred source for eyecandy or wallpaper-making? You can specify anime or artist titles too.
Hehe, being a (ex) leccher, I favor Newtype (japan) magazine with their huge amount of full page images for newer series. Art books are nice without text on top, but not all of my fav series have an art book. Even if they do, they take a long time to reach shops and even longer to my hands. Also, they don't have a lot of original images. I collect pencil boards so I like them for rare art that I can get anywhere else. ^^
As for artist, I'll go for anything by Carnelian, Misato Mitsumi, and Tukiji Nao.