It's been a long time since a banner ad has created a ton of buzz, but iKea did it with this ridiculously clever ad unit that features their ENTIRE store (that's 2,800 products) in one 300 x 250 banner ad. All, of course, to show their commitment to helping you make the most of your space.
Tiny little pixels feature one product, that when rolled over enlarge. Users can browse this way, search by category and click to buy all from the banner.
Love to see this kind of innovation with an old, tire medium. Well done iKea!