"Saturday Night Live" 50th anniversary special features stars, superstars celebrating half-century of highlights

Paul Simon and Sabrina Carpenter duetted on Simon's "Homeward Bound" to open the show, five-decade "Saturday Night Live" luminary Steve Martin delivered the monologue, and Paul McCartney gave an epic closing to a 50th anniversary special celebrating the sketch institution that was overflowing with famous former cast members, superstar hosts and legendary guests.

The 83-year-old Simon has been essential to "SNL" since its earliest episodes in 1975, and told the 25-year-old pop sensation of the moment Carpenter that he first performed "Homeward Bound" on "SNL" in 1976.

"I was not born then," Carpenter said, getting a laugh. "And neither were my parents," she added, getting a bigger laugh.