If the moon looks brighter than usual tonight...

...that's because it probably is. The moon will be closer to the earth tonight than it has been for fifteen years, which could make tonight's full moon look bigger and brighter than it has in a long time. (The BBC has an article about it.) I'm afraid our sky will be cloudy tonight, but if it's clear where you are you should go outside and take a look! (Though you may want to bundle up first. ;-) It would seem that even the moon is brightening up for the season...