There was some discussion about finding a CMS that uses CSS layout at the last meeting. I did a little looking around for CMS projects that advertise CSS layout as a feature -- There aren't many. What I did find is that there are some CMSs that have a "theme" feature that is flexible enough that some people have started to create CSS layout based themes. Here are a few that I found:
Drupal
http://drupal.org/
There is a "tableless" theme. Not too much more information about it.
http://drupal.org/project/tableless
phpWebSite
http://phpwebsite.appstate.edu/
Someone was working on a tableless theme.
http://www.cyberplasm.com/phpwebsite/
It looks like they are looking at trying to eliminate tables in this CMS in future versions.
I'm sure there are many others.

