Most of my insiration to do art in photoshop arised from browsing
www.deviantart.com a great site for image resources, and all things arty. I also came across a artist who works in photoshop, i like his work, that much i might buy some prints. his website can be found at
Art of Greg Martin (you need flash to view the site) There are many other artists but Greg is very good, each piece is inspiring.
If you need any inspiration i recommend that you check out
www.deviantart.com You can find anything from pixelart to stunning high quality prints. If you are going to check out deviant art or already know of it here is the link to my profile i will host some of my pieces there eventually.
ArtByScott on DeviantArt