Matt Smith and Jenna Coleman celebrate the 50th anniversary of the space-travelling Time Lord and take an in-depth look at of one of the most intriguing fictional characters of all time. With the 50th anniversary episode, The Day of the Doctor, about to hit our screens there's a look at all 11 incarnations of the Doctor and their most famous scenes and storylines, an exploration of the many sides to the Doctor and asking what is he really like. Plus, a look at The Doctor's many travelling companions and adversaries over the years and how they all contribute to creating the longest running sci-fi show of all time.