I always enjoy stumbling on really remarkable and the Belgian health department's Teenage Mum ad is just the type of stuff that rocks my boat. Basically a fake ad for a Sims type game, it will be interesting to see how effective it is but I'd say it's pretty spot on for the target audience. The execution is absolutely brilliant and it sports some of the best "faux-in-game" graphics I've ever seen. (Found on MeFi)