While I'm kind of short on content at the moment, I'm reasonably happy with my theme which is pretty divergent from most other geeklog themes I've seen.
In case you are wondering what was driving the changes. Many users of geeklog (from my various sites which is about 100+ users) have noted that the blocks, while cool, are kinda overwhelming. So I'm playing around with different ways to organize. I'm even starting to change how administrative and user functions/settings are presented.