14 Most Watched Doctor Who Episodes Of All Time

13. The Power Of Kroll

It's a widely regarded fact (the thing about widely regarded Doctor Who facts, of course, is that they're just as widely disputed, too!) that David Tennant is the most popular Doctor since the show's 2005 revival, but just 'who' is the most popular of all time? Well, that coveted title can arguably be awarded to Tom Baker's Fourth Doctor - in all his Jelly Baby eating, scarf wearing glory - who served as the universe's chief defender between the years of 1974 to 1981. After all, he well and truly was, and for many still is, the Doctor. "The definite article, you might say". The show reached previously uncharted levels of success during his seven year tenure in the TARDIS (also partly down to the fact that the series was beginning to make a name for itself in other countries, particularly the US) and this adventure from 1978 is one of the many escapades that helped to establish his incarnation as the most beloved and iconic to date. Well, his crazy hair helped, too! There isn't really much to say about The Power of Kroll, though, apart from the fact that it was the penultimate story in the Key to Time arc and featured a giant squid. It's probably only on this list in the first place because it happened to air over the Christmas period. The first episode was watched by 6 million viewers but the audience leapt to 12 million for part two which aired a week later on New Year's Eve. A ratings fluke, perhaps, seeing as the audience then dropped back down to 8 million after that. This is in no means representative of the Fourth Doctor's era as a whole, however, and, as you've probably already guessed, there's plenty more of him still to come...