Ask HN: Archive of well-designed PSDs?

I'm a coder. I can design decently, but I'm terrible at getting things looking beautiful.

I've seen Dribbble (which host mostly images, not psd's) and sites like PremiumPixel which provide a few PSD's. But what I'm looking for is a large, tagged archive of "open-source" PSD's.

Does this exist? If not, would you use it?