And I was sooo close! I actually decided to upgrade to Drupal 6.4 this evening. All the modules I use are ready, everything works, so I was all set to take the plunge.

But my theme, Dichotomy, has not been ported. In fact, it's never even been marked a point release. =(

Looks like I'll have to either port it myself or change theme. Any suggestions??
http://drupal.org/project/themes

I kinda like this one, but it's a complete departure from the status quo:
http://drupal.org/project/interactive_media

Ditto:
http://drupal.org/project/shallowgrunge

And this one is very simple and type-based, so I could achieve a similar effect without too much effort:
http://drupal.org/project/k2