Ummm.... did I document that? If you use dasBlog, you can have an individual template for each category. Just create a subdirectory with the same name as the category (and subdirectory of the subdirectory for a nested category) and place the modified template files there. I just did that for the dasBlog category (subcategory of newtelligence) and placed the new files into the newtelligence/dasBlog subdir below the main template directory. Requires version 1.2 or later.

newtelligence|dasBlog