Foo Fighters visited SNL this weekend, and Dave Grohl appeared in two sketches. One was the SNL Digital Short where Grohl lived inside Mirren's magical rack, and another had Grohl taking over Jason Sudeikis's job as a strip club DJ. They also did "Rope" and "Walk" on the show. Check out their performances and Grohl's sketch appearances below: "Rope" "Walk" ...