If you check out a navigation box at the bottom of a Wikipedia article (here's an example), you'll notice they do something distinctive with their lists:
- Lists grow horizontally, but wrap vertically when hitting the end of their containing element.
- Bullets go between elements, not before elements.
- Lists elements are not forced into columns (they don't have to align vertically).
I like the way these lists look, but I'm having a hard time finding ways to exactly replicate them. I can find similar solutions to put list elements into columns or just have horizontal growth without inter-element separators. I've used my browser's code inspector to look at the html for the wikipedia navs, but the style sheets get a bit crazy.