Two Column Themes
Faleonis is a two column widget-ready theme with inbuilt gravatar support WordPress 2.5 and above. The theme also shows a gravatar of the author at the end of each post.
Syrup is a two-column widget-ready theme which provides users with extensive options panel to control the look and feel of the theme. You can manage custom color schemes, layouts, sidebar positioning, font sizes and more from the admin panel.
DarkClassic is a two column widget-ready theme made up of black color with a green tinge. The theme has built in tag support.
Gymmetry is a two column widget-ready theme. You can customize the blog title and sidebar styles along with the header of the theme. The theme can also be customized to use 4 different colors.
WP Newsmag is a two column widget-ready magazine style theme. The theme has slider functions for the bottom bar and featured articles.
Three Column Themes
ComicPress is a theme made specially for blogs that publish comics, the latest edition of this theme has 5 different layouts which you can choose from. The theme also comes built in with its own manager to configure the theme and upload comics.