Tonight's Full Moon comes super-sized. The Moon reaches it's full phase just a few hours shy of the Moon's perigee, the point in the Moon's elliptical orbit where it comes the closest to the Earth. Because of this, the Full Moon we witness tonight will, visibly, be the largest Full Moon of the 2008 year. At it's apogee, the Moon is far smaller in the night sky. Here is a comparison.
Keep an eye on the sky as you head out tonight to pummel your brains into delirious stupor, and enjoy the beauty.