The bonus feature is that it will reload and update as your calendar changes. Unfortunately, Lifehacker claims that if you manage several Google calendars, you must choose only one to display. There was some challenge to this in the comments, however, so perhaps someone has figured out a hack by now. No luck for us Mac users, but I'm sure there's a widget out there that does the same thing.
We were checking out Lifehacker today, and found this cool tip for all of you PC users. If you like to stay up to date with your Google Calendar, this walk-through shows you how to make it your Active Desktop.