Audi's iPhone/iTouch free app
Audi is the first that I have seen that has done this – create an iPhone app that focuses on selling their product (which has nothing to do with the technology).
Audi’s A4 app is tough to play and seems like something you could get better at, but that is really not the point. It is polished, nicely designed and “drives” (no pun intended) you to the real site (which is for the new A4).
Smart. Audi makes nice cars that are not cheap – but fall right in the middle of the purchase price of many with the iPhone… interesting experiment.