A very innovative concept for Gol Airlines in Brazil...
The banner ad challenged users to imagine what it might be like to fly with their cell phones. They would then submit their mobile number into the ad and seconds later they got a call with flight instructions while the webpage turned into into a live flying game controlled by their phone.
As users fly over the webpage, strategically placed "deals" appear in your line of sight. The ad ends with a reminder that traveling is easier when you check-in via your mobile phone. Brilliant!