Upgrade a stranger
Vodafone just released a short but interesting online campaign in The Netherlands, called Upgrade a Stranger. Random people on the street are filmed (in pairs), and streamed live to the campaign website. Visitor of that site have 2 minutes two choose which one should get and upgrade. The fancy prices are handed out right away.
The campaign runs only for three days (today is the last day) and is pushed through advertorials on several leading Dutch blogs. As an extra, they give away fancy prices too. All you have to do is tweet who you want to upgrade with a Netbook.
Responsible agency is Achtung!, with me being responsible for the online media part.