I was really inspired by this "ambush marketing" campaign from Nike.  The ad features amateur athletes in different places named London around the world attempting to "find their greatness".  It is clearly a dig at the elitism of the Olympic games and their multi-million pound corporate sponsors.  The ad encourages the common consumer to aspire to a higher level of performance and helps Nike to relate emotionally with their customers.  The timing of the ad was perfect also, coinciding with the start of the London 2012 Olympics.