I've been using Facade on my Audiovox SMT5600 for awhile now and I'm absolutely loving it.

Facade is a tab based Home screen plug-in allowing you to view your upcoming appointments and tasks directly on your Smartphone Home screen along with application shortcuts launcher tool, assuring you will never miss any upcoming event! The only real solution that will help you follow your agenda!

Facade is one of the few Home Screen plug-ins I've really found useful. It's simple and clean and fits an amazing amount of information on the home screen with the tabbed interface.  

Facade is currently in beta and available for download for free.

P.S. - SBSH also sells Papyrus which many seem to love. I haven't looked much at it as I already use DeveloperOne Power Tasks and Power Calendar which are both excellent.