Hey!! I just made my first decent wallpaper! It's nothing too increadibly complex or such, but I enjoy it. =] Being developed within Ubuntu, and with the Ubuntu principles in mind, this is completly free, and your free to do anything you want with it. In fact, I encourage it, I'd love to see some variations or improvements too it. One more thing, if you use it for your desktop, I'd love it if you'd reply so, that'd make my day!
Update: Licensed under creative commons.
Standard desktop (For modifications, also the easiest on the eye.)
1280x1024 Link: http://i146.photobucket.com/albums/r...allpaper-1.jpg
1280x1024 Link at gnome-look: http://www.gnome-look.org/content/sh...?content=93845
Ubuntu desktop (Spent the longest on this one, you'll probably either love it or hate it.)
Kubuntu desktop (One of my favorites, has a non-intrusive logo that supports your desktop without being too intrusive.)
SECOND WALL PAPER REALEASED!! Topic here: http://ubuntuforums.org/showthread.php?t=992537