smoked1 - 4:07 am on May 12, 2006 (gmt 0)
My favorite CMS so far is SubDreamer. It uses mod_rewrite and lets you decide what the name of the pages will be. It's not free but it gets the job done and the template structure consists of one page with php includes. These days, unless you have requirements that an existing CMS can't meet an open source solution will probably work fine.