Grant Tinker, former chairman and CEO of NBC, died on Tuesday, Nov. 29. He was 90. In 1969, Tinker and his then-wife, actress Mary Tyler Moore, launched MTM Enterprises. The company became an indie powerhouse, producing such popular series as the ground-breaking The Mary Tyler Moore Show, starring Moore, Rhoda, The Bob Newhart Show, WKRP in Cincinnati, Hill Street Blues and St. Elsewhere. In 1981, Tinker left to become chairman and CEO of then-last-place network NBC. There, guided by his famous motto “First be best, then be first,” Tinker, with Brandon Tartikoff as his entertainment president, spearheaded a ratings turnaround...