An attractively styled list of all your upcoming iCal and Google Calendar events and tasks. Rather than focusing on the calendar like the others, this interfaces places the emphasis on the list of pending items.
Another simple menu calendar that shows your upcoming events from iCal. One bonus here is that you can use the menu bar item to show both the time and date, which means it serves as a great, more functional alternative to the default OS X clock menu item.
Yet another menu bar calendar that shows your iCal events. This one has a very minimal interface with almost no extras.