I've used the same hand-crafted style for my blog almost since the beginning. I was bored this weekend, so I went looking for Movable Type template sets. There are really not many at all! Especially not compared to the number of themes for Wordpress.
I switched to the Mid-Century theme by Jim Ramsey. And now I may try to figure out how to exactly start tweaking it for my own needs.
As a side effect, comments are now enabled.