Here's a screenshot with a preview of an Icon set I'm working on. Will try to get it done for a first release this weekend. As you can see, the icon set is not yet completed and also still in .psd format.
Anodized
In case you don't know, when you do your final versions you can export to PNG and keep the full alpha channel for 256 levels of opacity (instead of on or off transparency like with GIFs), so your corners can blend in nicely with the background.