Actor Neil Patrick Harris hosts; Taylor Swift performs "Love Story" and "Forever & Always."Sketches include "The Rachel Maddow Show," "The Today Show," "Save Broadway," "Penelope in Group Therapy," "Digital Short: Doogie Howser Theme Song," "Weekend Update" with guests Charles Barkley and Will Forte, "Two First Names," "Air Traffic Controllers Fran and Freba," "Frost/Other People," and "Whopper Virgins."