This Jan. 30, 2014, photo provided by NBC shows Miley Cyrus, left, during an interview with host Jay Leno, on "The Tonight Show with Jay Leno." Leno, who took over the "Tonight Show" in 1992, will host his final episode on Thursday, Feb. 6, 2014. (AP Photo/NBC, Paul Drinkwater)BURBANK, Calif. (AP) — Jay Leno, as affably efficient behind the curtain as he’s in front of the camera, avoids waxing poetic about his 22-yr “Tonight Convey” run that draws to an in depth Thursday.