1: Michael Keaton paid homage -- ever so slightly -- to his roles in  Beetlejuice  and  Batman  in his third turn hosting  Saturday Night Live  this weekend . 2: Keaton acknowledged in his opening monologue that a lot has changed since he first hosted the comedy sketch show in 1982 . 3: Michael Keaton hosted  Saturday Night Live  for the first time in 1982 .
1: Saturday Night Live 2: the comedy sketch show 3: Saturday Night Live