Is there any way to display the upcoming agenda from the calendar on the home screen?

I've looked both under the calendar and the Screen/Keyboard settings, but don't see anything.

Go and look for a "Today" type theme in the media center forum located here:
Media Center - BlackBerryForums.com : Your Number One BlackBerry Community

Be sure to only use one for your model device.

Hi
Try the hedone design Zen theme
VistaLike | Hedone Design
works great on mine