Led Zeppelin is releasing a film called Celebration Day of their 2007 reunion show. In December of 2007 the band reunited for their first show in 27 years at London’s O2 Arena to pay tribute to Atlantic Records founder Ahmet Ertegun. Only 18,000 lucky fans were able to get tickets to this show through a lottery system (20 million people applied), but now 1,500 screens all over the world will show the movie. The film premiers on October 17th and tickets will be available here.