I hope not! Those annoying ads you get when you mouse over them or that float on the page with you on your scroll. JenSense has the scoop describing what these ads are;
Floating ads are ads that either stay on top as the page is scrolled, or ones that "float in" from the side of the page to the center of the page. Expanding ads are those that require user interaction to expand, either with a mouseover or a click. Interstitials are perhaps the most interesting addition to this rich media beta, because they are a format that people love to hate, and that are often more annoying than pop-ups. You have likely stumbled across an interstitial ad - they appear when you click through to read a page, and before they will show you the page, you are bypassed through to a full page ad that you must view before seeing the actual content you were wanting, often by having to click a link on the interstitial ad page.
I was not able to find threads on this topic at WebmasterWorld, DigitalPoint or Search Engine Watch Forums, but we do have a thread starter at Search Engine Roundtable Forums.
In that thread, I reply to the "do no evil" response, asking if it is Google that is evil or the publisher that is evil here? The gun debate can be applied here. :)
Forum discussion at Search Engine Roundtable Forums.