Rival theming sites

Here are some more examples (related to Joomla):
http://www.joomla-themes.co.uk/
http://www.joomla-themes.biz/
http://www.joomla-themes.org/

For mambo:
http://www.themesbase.com/?category=Mambo
http://www.pixelsparadise.com/
http://www.themegurus.com/ 

Designs for Review:

Round one  

Round two+ (supersedes round one)