It’s all well and good using videogame artwork as desktop wallpaper, but a chap named Orioto has gone one better and drawn his own based on retro videogames. They’re available at Deviant ART to download and look dazzling.
Shame Sega can’t make a 2D Sonic game that looks as good as this.
I like the Yoshi’s Island remake, it fits the style of the game. In two minds about some of the others. I think the Sonic one is possibly the weakest, it looks too much like an effects-heavy 3D rendering and suffers from too much lens flare, depth of field and blurring guff.