My current wallpaper is this very cool wallpaper that presents the characters from the Street Fighter series in the style of Disney’s Tron:
You can click the image to get to the full-sized image.
I love the bright colours and bloom-lighting style of it. Each character really pops, and I particularly like the art for Chun Li, Cammy and Vega.
I was not sure where it came from, but having a quick look around it seems to originate from DeviantArt user, Alias99.