Office 2003 Add-in: Outlook Calendar Views

With the Calendar Views Add-in, you can easily create and manage filters to display subsets of appointments in Outlook Calendar. Filtered views are based on labels and categories that you apply to appointments. Click here to Download

I find this AddIn useful because I tend to have appointments in my calendar that relate to different projects that Im working on. With the AddIn, its a lot simpler to filter and view appointments for a specific project.