BBC bosses have scored a mention in the Guinness World Record books after Doctor Who fans in almost 100 countries tuned in for the 50th anniversary special this weekend (23-24Nov13). The highly-anticipated episode, in which current Time Lord Matt Smith united onscreen with previous Doctors David Tennant and Tom Baker, and former star Billie Piper, was broadcast in the U.K. on Saturday night (23Nov13), attracting more than 10 million viewers alone. It was simultaneously aired in 94 countries around the world so fans could all follow the story 'live', and millions more are estimated to have tuned in. The one-off anniversary episode, titled The Day of the Doctors, also featured veteran actor John Hurt, and producers thrilled fans by including the Doctor's iconic enemies the Daleks and the Zygons. It was screened at more than 1,500 cinemas and on TV networks around the world, earning the event the Guinness World Record for "the world's largest ever simulcast of a TV drama".