I just found a great little website that has some nice BlackBerry icons for your Mac or PC. I just liked being able to set a new icon for the BlackBerry desktop manager so that it has a nicer feel. The icons are completely free but they do not have some of the latest devices such as the 8800 or 8300 but the icons are really nice. I had a friend ask me for one for his Mac Dock and they worked like a charm for him.
Check out the full icon set at this link. This may also be useful for budding theme makers.