that's exactly what it is Amelie :) and yesh, Joker wallpapers are very cool...although I think the one I posted is the best one (from the movie that is...I have other non-movie related Joker wallpapers lol)
Well....I'm switching between these two nowdays so..I'll post them both
http://img183.imageshack.us/img183/1088/darkknight13oe4.jpg <--- C'mon...I know you want it...you know you want it....feel free to use it as your wallpaper too lol...