WordPress Theme: NewZen
A simple looking theme, NewZen has a fair bit going on under the hood, as a two column theme, it might not look like much, but once you realize all the features and code running it, you might like it more than you originally thought you would.
This is another theme that I have created. It started from my idea of Kubrijax, but I started from the ground up and it includes AJAX Sidebar, and also AJAX Commenting.
Grab it at fauxzen.com