US President Barack Obama is seen with host Jay Leno during a taping of “The Tonight Show” at NBC studios in Burbank, California. Obama has appeared on the late night comedy shows before as a candidate, but NBC said this will be the first time a serving president has been on “The Tonight Show.” The long-running show, previously hosted by Johnny Carson, is an entertainment institution in the United States that features Leno’s comedy routines, a live band and celebrity interviews. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)