A web site that discusses uses of CSS is A List Apart.
They had an article discussing lists, which I found interesting. The author was trying to describe CSS that allows two-column lists, without resorting to tables. The article's sample html is here (css).
Here's an example of lists made using Chris Cassell's technique. Beware that the example breaks badly if you do not use P tags in between the lists; the problem is that the CSS causes the lists to run together.
An intermediary paragraph.
A closing paragraph goes here.