Kimoto Timora - ultimate SLO culture and subculture site. Once upon a time arkzin existed in a paper edition. Now there's a web collection of old issues. CG art gallery - well designed site with 3D and 2D art gallery's, free models and some more. Every month they choose the best artist.
Concurrence is really big and really strong.
If you don't have in mind to suggest yourself or someone else, then just take a look at the previous nominees. Really good site. One of the best image gallery.