has bid farewell to "Tonight Show" for the second time. On Thursday, February 6, some stars made surprise appearances on his final show, joining announced guests and to pay tribute to the longtime host.
After a sit-down with Crystal, the likes of , , , , Chris Paul and surprised Leno with a rendition of "Sound of Music" parody. "So long, farewell, tonight I told my folks," Kim sang, "and now, I won't be the butt of Leno's jo-okes." Black continued, "So long, farewell, auf wiedersehen, goodbye. If Fallon tanks, you'll be back here next year."