Surfing on a Brazilian website called misterwp I’ve found this huge list of websites where you can find themes for your wordpress. As the website is in Portuguese, I’m sharing this here. So if you are looking for a new design for your blog, maybe here is a good place to start! 
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Via [MISTERWP]
Have you tried iStylr.com? It lets you generate/alter your own custom wordpress template online.
Also visit http://www.smashingmagazine.com/. Tons of design tips.
Be careful. There are some reports on malicious code into theme.
Look here: http://5thirtyone.com/archives/837
hmm, thanks for sharing this
Thanks for including me in your list. It originally came from http://codex.wordpress.org/Using_Themes/Theme_List.
@nexenator: iStylr looks like something I will have to try out.
Great collection,
Thanks so much.
Cool! Peshi ischo
Thank you for this information.
Stunning blog and good article. High 5 for u man !