I noticed tonight as I was posting on the Search Engine Watch blog that Google has purchased the massive skyscraper on the right column of this page (scroll). It’s a flash/rich media ad. Check it out (so to speak) while it lasts.
On a vaguely related note, see the local targeting demo video (right side, click “Start Demo”). In case you haven’t done so recently, take a look at the whole AdWords site. It’s a lot more user-friendly and accessible.