Showrunner

I'm sure I wasn't the only person that had never heard this term before.

"Showrunner is the 21st–century term for the leading executive producer of a Hollywood television series in the United States. The concept has since been adopted in the Canadian and British television industries. A showrunner typically has creative control of a television series production, through combining the responsibilities of the head writer, executive producer, and script editor. In films, directors typically have creative control of a production, but in television, the showrunner outranks the director."

Chris Chibnall succeeded Steven Moffat as the showrunner and head writer of Doctor Who earlier this year, beginning with the current (eleventh) series. "A lifelong Doctor Who fan", he had previously written five episodes of the series under previous showrunners Russell T. Davies and Steven Moffat, and was also the head writer for the first two series of the spinoff Torchwood.