Google is introducing sitelinks to AdWords. If you're not familiar, sitelinks are links to pages deeper on a website. We've seen them in organic results for quite awhile.
Ad Sitelinks are only being launched to advertisers that meet a high-quality threshold. If your account qualifies, go to your Campaign Settings Tab, then to the "Ad extensions" section. Look for "Show additional links to my site."
Here's a sample ad provided by the Inside AdWords blog (click to enlarge):
Meet Your Favorite Search Engine Watch Contributors
Many of SEW's leading expert contributors will be at ClickZ Live, the new online and digital marketing event kicking off in New York (March 31-April 3). Hear from the likes of: Thom Craver, Josh Braaten, Lisa Barone, Simon Heseltine, Josh McCoy, Lisa Raehsler, Greg Jarboe, Dan Cristo, Joseph Kerschbaum, John Gagnon, Eric Enge and more!