Martin Short will visit Saturday Night Live’s annual holiday episode on December 15, marking his third time as host. Playing musical guest will be fellow 60-plus-year-old Paul McCartney, making his fourth appearance. When McCartney performed two years ago, he did five songs and popped up in the opening monologue, a digital short, and “Weekend Update.†Short was a cast member for the show’s tenth season and had some one-on-one time with another Beatle when Ringo Starr hosted on December 8, 1984.