Neato!
NintendoNext has some pretty fly home made Project Dolphin wallpaper for you! It comes in 3 flavors all zipped up for your pleasure...800 x 600 , 1024 x 768 , and 1280 x 1024 . They also have an interesting story about Square on their page. But I advise reading at your own risk. To be quite honest, I'm not sure about the truth to half the news on their site, but hey, it's nice to dream too! At least the wallpaper is pretty cool.