I think I figured it out. I had to go into my settings and tap Accounts & Sync. I then tapped my Gmail email address and then unchecked Sync Calendar, then rechecked it. The little icon started to spin around and then I checked my phone and viola! my events showed up.
Do I have to do this everytime I need to sync up my desktop google calendar to the stock calendar on the Droid? Why can't it sync on its own as soon as I plug in the USB cable and mount it?