After a lovely fight with PHP, I have now tweaked the gallery script to display 8 backdrops at a time. It will also automatically pick up and display ANY backdrops that you upload or contribute, so take a gander.
New Backdrop Gallery Here! (Accessible via downloads)
Also, the MMS gallery should now allow you to see 8 Animated gifs at once too.
New Animated MMS Gallery Here! (Accessible via downloads)