Art Galleries of Greg Martin (Updated)
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Some tutorials, wallpapers, digital paintings, art prints, and more 3d Art.
Update!!!: Since the Wallpapers are no longer available due to storage on Greg Martin's Homepage, I found a collection of some of Greg Martin's Wallpapers.
link:
http://www.nikush.com/gallery/thumbnails.php?album=7
http://gallery.artofgregmartin.com/index.html