Doesn't want me to link properly...bastards...so copy and paste I suppose..
http://www.segaxtreme.net/Wallpaper/Space Channel 5/ - Some Space Channel 5 wallpapers
http://www.segaxtreme.net/Wallpaper/Jet Set Radio/ - Some Jet Set Radio wallpapers
http://www.segaxtreme.net/Wallpaper/Jet Set Radio Future/ - Some Jet Set Radio Furture wallpapers
http://www.segaxtreme.net/Wallpaper/Rez/ - Some Rez wallpapers
http://www.segaxtreme.net/Wallpaper/ - A bunch of different Sega wallpapers