Last night the 2012 Summer Olympics kicked off with a huge Opening Ceremony in London's new Olympic Stadium, an event watched on television by an estimated 1 billion viewers. Performances paid tribute to British heritage and culture, from agrarian beginnings through pop culture successes like the Beatles and J.K. Rowling. Contingents from more than 200 nations marched in the athletes parade, and the evening was capped off by the lighting of the Olympic Cauldron, a performance by Paul McCartney, and a huge fireworks display. Collected below is just a glimpse of last night's ceremony, as the 2012 Olympics are now underway.