One Column Themes
WhitePaper is a one column theme which makes use of the black and white colors. The theme has a extended sidebar in the footer made up of two columns.
Two Column Themes
This is certainly one of the best themes I have seen since quite some time, the theme definitely provides website owners with lot of options with a magazine style home page customizable tabs. This theme definitely packs in quite a punch with quite a lot of features.
[EDIT] Resolved. Thanks to Brian and Justin.
This is a two column AdSense ready theme which comes built in with ad units in the posts and the sidebar. The theme provides you with comment styling and is optimized for search engines.
This is a two column widget ready theme with integrated plugins such as wp-email, wp-print and wp-pagenavi. The theme also provides with an advanced posting option where you can post site updates in the header.
Blue Green Harmony