Well, as I get more and more into content management systems, one client has determined which one will be the one I get intimate with first: Drupal. It is a highly rated one (see Open Source CMS) and has lots of configurability--themes and modules. (For comparison with other CMSs, also check out CMS Matrix.)
Well, I'm trying out a new way of building web sites--using a CMS (content management system). It's pretty cool, but there will be some customization, of course, to get it to do everything I want it to. However, it adds lots of features I did not have time to put into my current site. Features such as aggregated RSS News feeds, and out-of-the-box support for blogging, which is something I've thought about doing, but just never had the time to implement.