[08/24/2014]: Crunchify moved to Genesis Framework and using Eleven40 Theme.
Please visit this post instead: http://crunchify.com/new-to-wordpress-org-have-a-new-blog-try-these-top-free-wordpress-themes-on-your-site/
There are more than 1800 themes available on WordPress Theme Directory. Out of them here are 3 my favorite themes.
Mystique is a free WordPress theme that attempts to top commercial templates in terms of design and functionality. Some of its features include 4 theme widgets, page templates for different layout styles and a advanced interface for the theme settings…
This theme supports widget, threaded-comments, theme-options,and translation is ready. Also including page-navigation and multi level dropdown menu.You can see live demo including more information here http://www.mono-lab.net/demo1/
Inspired by MacZone.sk, created by mg12. It is very stylish, widget supported and doesn’t require any plugin.
Please add your favorite themes in comments and I’ll add those here as Visitors Favorite Collection.