Obit watch: December 1, 2016.

Grant Tinker, founder of MTM Enterprises and former head of NBC.

And as chairman and chief executive of NBC from 1981 to 1986, Mr. Tinker crammed prime time with many of television’s most imaginative, successful and long-running series, including “The Cosby Show,” “Cheers,” “Hill Street Blues,” “Family Ties,” “St. Elsewhere” and “Miami Vice.”

Setting out as an independent in 1970, Mr. Tinker and Ms. Moore formed MTM to produce “The Mary Tyler Moore Show” for CBS. Created by James L. Brooks and Allan Burns, the show had phenomenal success over the next seven years, which led to a host of spinoff hits and a growing stable of writers and producers eager to work in a creative atmosphere.

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