There were a few tweets that caught my eye the other day from @ppchubbub and @dannayroberts that show off Google AdWords ads that really start to look more and more like the organic listings. The only real difference is the ad label.
Here you can see callout extensions being merged into AdWords ad description line. This was shared by @ppchubbub:
And here is @dannayroberts showing another ad format looking a lot like the organic brothers:
There is a lot of chatter around this on Twitter right now. Mostly with paid search advertisers saying this helps increase click through rates on their ads.
Forum discussion at Twitter.