I'm posting this because I only recently found out it existed and because my Avatar: The Last Airbender posts are popular enough that I'm assuming at least a few people will find it to be of interest.
Gene Luen Yang, the creator of American Born Chinese (which I read, enjoyed, and could never get myself to write a post about), has written an Avatar: The Last Airbender graphic novel. I knew that much, because a week ago I tried to find it at my local Hastings and failed miserably. What I did not know was that Dark Horse, the publisher, has desktop wallpaper based on the cover of the first volume. And the wallpaper is even in my size (ginormous 1920 x 1200).