The first episode of Saturday Night Live, which aired exactly 40 years ago this weekend, on Oct. 11, 1975, is now an iconic bit of television, from George Carlin’s monologue to Andy Kaufman’s “Mighty Mouse” routine. But it wasn’t really the same show as the Saturday Night Live that millions of fans tuned into when it returned for a new season last weekend. “I don’t think the show was what it became until probably Christmas of that year,” recalls Anne Beatts, one of the show’s original writers and an Emmy winner for her work there.