The 1970s are often spoken of as a golden age for movies, a time when filmmakers produced challenging classics that refused to pander, combing love for the history of the medium with modern sensibilities. Though it might not look that way from our perch in the Age of Prestige TV, that was true the tube in the ‘70s, too—and it has a lot to do with legendary producer Norman Lear, who died yesterday at the age of 101.The era’s renaissance kicked off with James L. Brooks and Allan Burns’ Mary Tyler Moore Show, which dared to imagine a single, professional woman with a career and active love life, a firm break from the sillier and safer shows of just the prior year. The series produced a couple of successful spin-offs, but nothing like the television empire that would arise just a few months later when Norman Lear’s All in the