Its the man himself who makes the Fourth Doctor so great. Tom Baker is a lot like Matt Smith in many ways (which is probably why I view them as my two favourite Doctors). Tom Baker brought everything to the role, and was always immensely enjoyable on screen, having that fantastic ability to flit between the light and dark, cold and crazy, menacing and fun. He brings immense warmth to his relationship with his companions, particular the aforementioned scene with Sarah Jane in The Seeds Of Doom and his jovial banter with Romana II as they holiday in Paris (The City Of Death) Hes brilliant when he takes alight-hearted approach to the situation (Jelly babies pop on a number of occasions) and when hes cold, such as his disregard for the dead Laurence in Pyramids of Mars, prompting a furious outburst from Sarah Jane and showing just how alien the Doctor is. And he also brings great wisdom to his role, none more so than his final scene. Surrounding by his new children (Adric, Tegan and Nyssa), the Doctor is accepting of his death and the arrival of the Watcher (Its the endbut the moment has been prepared for) Even at the end of an era, the Doctor had one great moment still to share. Other Doctors might be your favourite (chances are its your first Doctor) but theres no denying the impact Tom Baker brought to his role as the legendary Fourth Doctor.