"SNL:" Sigourney Weaver, on "Tonight"

  "Saturday Night Live" brought back Sigourney Weaver last night, for only the second time, and the timing was flawless. Her's too. Weaver's dad, of course, was Pat, and he was the long-ago NBC president was created both the "Tonight" and "Today" franchises, which are among the two most important franchises in television. (Along with "SportsCenter" and "SNL" and...)

  Here's her monologue last night: