A really nice theme from ionfish which was just released is Tarski. It is a two column theme, with an interesting look.
Tarski is a WordPress theme. Itâ€™s intended to be usable out of the box, by people who just want to get on with writing and donâ€™t have time to learn web development first. Coming with a choice of tasteful header artwork, Tarski has numerous options accessible via a simple, easy-to-use options page.
For the more technically-minded, Tarski provides a flexible basis for any number of alterations, from ssimple things like changing the header, to more complex structural changes. ionfish is actually running a modified version of Tarski, so as you can see, fairly drastic alterations are far from difficult.
Check out the Tarski theme page for more information.