Just wanted to post a quick note about the release of a new WP Theme called 'Split Level'. I used it on my blog for several months before the new one, and thought that someone might find a use for it.
It's two columned, and also split horizontally into two sections too. It has some cookie work, which allows you to select options on a second menu to display which category displays first on the blog.
Anyway see the theme release page: Split Level WordPress theme.