I've been playing the self aware games (word ace, card ace, blackjack) and have been able to use animated gifs as my profile pics. It works well, and shows the animation to myself and the other players can see the animation too. It doesn't show the animation to other players using iphones as the iphone doesn't support animated gifs evidently.
So would it be possible to use an animated gif as your wallpaper? That would be cool, anyone else tried it and gotten it to work?