This week sees Europe's annual cheese-fest, otherwise known as the annual Eurovision Song Contest. About this time every year, contenders from across Europe descend upon the nation that won the year before, and prepare to do battle in the Euro-pop arena. I'm not a fan myself, but plenty of folks are -- around 100 million people are expected to tune in to watch the contest live. And, to enhance the experience a little further, is the official Eurovision Song Contest app for iOS.