Real Content Management
I've worked in a variety of content management solutions, and I helped develop, debug, and test the one in use at Digital Partners (aka ispi). Content management solutions like MovableType are great chunks of software, well written for your basic content manager, but there is one thing they don't have, and that's a good understanding of the editorial process.
Amy Gahran has written a great piece (as well as a follow up article) about what she wishes content management vendors and Web site/intranet owners would understand about the editorial process so they can adapt their tools accordingly. A good read, especially if this type of thing is of interest to you.