I’ve found the perfect WordPress theme, Atahualpa from BytesForAll, which I’m now using at MacMegasite. Every aspect of the theme is completely customizable with 25 pages of options. I highly recommend this theme. With all of those options, you can easily make it your own.
I like this one more: http://skitch.com/mike3k/be763/possible-theme-change
Agreed, the theme looks very plain, but I plan to add some graphics to it, like a glassy background for the info bars. The theme has 20 pages of options, so it’s very customizable. The other theme has some bugs. In particular, the sidebar is messed up on single posts.