This Saturday night Elton John will join the proud ranks of MC Hammer, Olivia Newton-John, Taylor Swift and Desi Arnaz when he pulls double duty on Saturday Night Live by both hosting and serving as the show's musical guest. John doesn't have much of a background in comedy or acting, but he's actually sort of funny in these promos where he goofs around Benny Hill-style with Jason Sudeikis. Also, going way back, he was always one of the better guests on the Muppet Show. There's no word on what skits he'll appear in, but here's hoping he winds up a guest on the Miley Cyrus Show. Leon Russell will be joining John for at least one of the evening's songs.