Motion Charts is a new visual tool from Google Analytics that launched today and will be rolled out across Google Analytics accounts over the next couple of weeks. Until you get access, here's a preview:
May help in your decision which keywords to keep and to kill in pay-per-click without pouring over pages of numbers. Or show you which terms to focus on for SEO.
But before you pull the trigger on a PPC keyword, you might want to give this a read.