Now that Steven Moffat's tenure as Doctor Who showrunner has come to an end, we salute all the Moffat era gave to the show...
Steven Moffat has written more of Doctor Who for television than any other writer in history. He's also won more awards for writing Doctor Who than any other writer, which should tell you something about his hit rate.
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Like anyone doing a job in this show for an extended period of time, he has his fans and his detractors, but there's no way of overstating his contribution to the show in the last 12 years, and going back before the revival was even on the cards, or forward into the future, with his Target-style novelisation of The Day Of The Doctor coming this April.