Looking for a nice, clear and easy Lunar Widget for your Vista Sidebar?
So far, this one I have found the best: The Moon Phase II
This gadget displays a realistic representation of the Moon and its phase. There are lots of options to control the gadgets size, orientation, opacity etc. Data about the Moon is displayed in a flyout panel, basic data can be displayed on mouse-over. The data can be for a geocentric or topocentric location. It also gives the dates/times of the next new and full Moons, Moon and Sun rise and set times.