I found a really sweet bit of online advertising for HP on Gizmodo. I found it on this page
(your own mileage may indeed vary). HP Touchsmart PC. That's what you are looking for. You can navigate and watch video, get specs, and preview without leaving the ad itself. Panels flip out (a nav item becomes a tablet for data by flipping out and over, so you are viewing it's reverse side). Nice.
Roll over the advert block, and out spins a cool navigation scheme over top of the regular page contents. Normally I don't like Flash ads unless they are well-done. I'd chalk this one up to really well done.
Erik Natzke - did you have anything to do with this one? I assume yes since it's understated and elegant prior to activation, and very intriguing once the navigation spins out into the page.