Elfwood and
DeviantArt.org are great links for inspirational art. These are two of the biggest art communities, but not the only ones.
Elfwood is currently under construction, but some features are still available.
Here are a few of the other leaders
Renderosity: Huge place for artist of all mediums. No matter what sort of art you create, or enjoy viewing, photography, oils, acrylics, cartoons, animation shorts, 3D graphics, it's all at 'Rosity. So, make yourself a member of Renderosity, it's worth the time.
DAZ 3D: Click on the community tab and then click galleries(at left). The software from DAZ Productions is some of the cheapest in the graphics industry, unless it's free.
Animotions: If you are into comicbooks, viewing comics art, or how to make your own, you should think about signing up at Animotions. Must sign up to see the goodies. Again, it's well worth it.