There is a new series that I’ve written, about fun things that you can do with an announcements list in SharePoint.
Part 1: Create a Publish Date functionality for Announcements
https://www.nothingbutsharepoint.com/sites/eusp/Pages/fun-with-attachments-part-1.aspx
Part 2: Create Alerts Based On Announcement Categories
https://www.nothingbutsharepoint.com/sites/eusp/Pages/fun-with-announcements-part-2.aspx
Part 3: Modify the default “Current View” of the announcements Web Parts
https://www.nothingbutsharepoint.com/sites/eusp/Pages/fun-with-announcements-part-3.aspx
Part 4: Create a “More” link to view the details of each announcement
https://www.nothingbutsharepoint.com/sites/eusp/Pages/fun-with-announcements-part-4.aspx
Enjoy, and happy sharepointing!