Tonight’s SNL50: The Anniversary Celebration opened with a surprise Paul Simon/Sabrina Carpenter duet and closed over three hours later with another Paul. Paul McCartney, who we just caught in a pop-up show at the intimate Bowery Ballroom this week, has been a musical guest on the series four times — in 1980, 1993, 2010, and 2012. He also appeared on the 40th anniversary special and in several comedy segments on the show (remember The Chris Farley Show?) over the years.
