BerryWalls let me know they have just opened their beta to the public. The offer a small collection of 300+ wallpapers for your BlackBerry sized for 81xx, 83xx, 87xx, 88xx, 89xx, 9000, & 95xx. Nothing crazy special but they do have some nice shots available that look great as a wallpaper.
Check it out from your desktop or your BlackBerry at www.berrywalls.com and let me know what you think! If you find any gems let me know.