Sugar free Chupa Chups Great ad- completely solved it with a visual and a tagline. It's so simple but really clever. This is the type of thing that I'd like to make. There's a ton of other great ads in this article, definitely worth checking out.
"This one is an IBM smart cities campaign product/ad. It is great because it is intelligently complementing the ad with the functionality of the design, so perfectly that the audience really gets the idea of the “Smarter Cities” out of this design.
Norwegian Optician Poster Design - they nailed it! You can find your face shape and see if your glasses match the ones on a poster. It's both fun and informative. Where was this when I got my last pair of glasses?