OK, I went on a frenzy the past couple days and created about 35 new skins, encompassing domestic cats, wolves, tigers, other assorted wildlife, the Kansas City Royals, and the Green Bay Packers. I also already had a lot of floral and abstract colored skins. Rip 'em if you like 'em.
Next up, more wildlife, dragons, fairies, and, because I damn well feel like it, some TV themes (Buffy the Vampire Slayer and Veronica Mars, specifically).
Here's thumbnails of some of the backgrounds/tiles I've used:
If you have a request, let me know, and I'll do the best I can for you as time allows.
Updated Tuesday a.m.
Added a bunch more skins -- gothic, lightning, and a couple miscellaneous tiled skins.