OpenOffice.org, productivity suite included in Ubuntu, just released version 2.4. OpenOffice.org 2.4 is a minor release, the last before version 3.0, but it includes plenty of new features and fixes. OpenOffice.org Ninja has a post with screenshots, and The official release notes detail every change and fix.
You may not realize (I didn’t until today) that OpenOffice.org 2.4 is in fact already included in Ubuntu 8.04 Beta. It’s not mentioned in the Ubuntu release notes, and the about window in still says version 2.3 except in the fine print: