I've added the collectable minifigure series 2 wallpapers to the repository, along with a few miscellaneous ones dug out of the wayback machine's archive of LEGO.com by Scott B. Question: were there a set of wallpapers for series 1 figs that I missed?
If the thumbnails don't display when you view the page, try again: the wallpaper images are still hosted on the cra??y 1and1 server which restricts concurrent connections and under heave use it won't show them. So, just refresh the page.