they have a large selection and they are all free to download. some packs have more icons than others, but they are def worth a look. If you download the pack, just be sure to choose the .PNG options (i think they are designed for LINUX) but they are a pretty high res so they look great on the phone. I used the crystal clear pack to create my current theme. I'll post pics soon
hope this helps someone out.
Also: they have blackberry icons (as in pics of the actual phones).
Also, Also: the site is a little slow to load as I think it is either really feature rich, or poorly put together but it is worth the wait.