In the original post in this thread Staff said:
To keep it manageable, here are a few ground rules for this thread:
1. No discussion, just pointers to specific themes please. You can discuss the themes elsewhere.
2. Please include a link to the theme home page or download page. No requests for hypothetical or unreleased themes, or changes to existing themes.
3. One theme per reply.
4. We can only consider themes that are clearly licensed under the GPL.
If you're not sure where to find GPL'd WordPress themes, themes.http://themes.wordpress.net/ is a great start.