Here is Collection of high quality free wordpress themes.
Top Downloaded Themes
Coffee Desk:
A desk-like theme tested up to WordPress 2.6.1. Version 2.0 includes features requested by bloggers. The coffee cup is an RSS button. Different sidebar, mouse and background color options are available for download at the theme’s page.
Desk Mess Mirrored:
Marble desktop covered with a mix of old and new items, such as some vintage papers, a stainless steel pen, and, a hot cup of coffee! Now with drop-down menu support! Please read the included changelog.txt and readme.txt files for details of the latest changes and important notices.
I feel Dirty:
Blue Moon:
Latest Themes
tarimon-black1:
Width fixation of two columns and theme for widget. It confirms the operation with WordPress versions 2.7 and 2.8. It confirms it by the latest version of Safari, IE, Lunascape, firefox, Opera, and Slepnir at the time.
AppleX:
Apple x is a premium theme which has a vector based totally unique design. It has a Header vector image and superb web 2.0 color palette with clean coding for easy modification.
White Gold:
Stylish theme having three columns with content in center. Fixed-width, widget-ready, translation-ready, paged Navigation and threaded comments. Several options available to customize the theme. Custom descript.
Audacity of Tanish:
Dark configurable theme with JavaScript effects 
, bottom bars, costumisable background image, dynamic content show/hide capabilities. Needs WP >= 2.7 for full functionality. SCREENSHOT DOESN’T DO JUSTICE.
Feature Themes
Constructor:
WordPress Constructor Theme for those who want to create a unique blog design quickly and effortlessly (many layouts, configured colors, custom fonts and slideshow, etc).
P2:
A group blog theme for short update messages, inspired by Twitter. Featuring: Hassle-free posting from the front page. Perfect for group blogging, or as a liveblog theme. Dynamic page updates. Threaded comment display on the front page. In-line editing for posts and comments. Live tag suggestion based on previously used tags.
Suffusion:
An elegant, versatile and browser-safe theme with a power-packed set of options. It has 19 widget areas, one-column, two-column and three-column fixed-width and flexible-width formats, 10 pre-defined templates, 17 pre-defined color schemes, two customizable multi-level drop-down menus, featured posts, a magazine layout, tabbed sidebars, widgets for Twitter, Social Networks and Google Translator, translations in many languages and RTL language support.
Red Christmas:
Holiday, Minimalistic two-columns, fixed-width, widget-ready, seo optimized red theme for WordPress.
themes are good,,,,,,i need real estate wordpress themes,,