MINISERIES PREMIERE: This four-part documentary series is a decade-by-decade history not only of advertising, but of television itself – and, as such, is valuable as well as impressive. Syracuse University pop-culture expert Robert J. Thompson is all over this thing, and makes great use of his screen time – and Matthew Weiner is all over the opening episode, too, bringing clips from his Mad Men series and revealing just who, on the real Madison Avenue, inspired what. Expect plenty of fun facts: I had no idea, for example, that the whole concept of engagement rings was something basically cooked up by Madison Avenue no sooner than the 1940s. And what was Clairol’s “Does she or doesn’t she?” tag line really asking?