NYC Tourists Surprised by Photobombing Hamm [VIDEO]

What’s your best photo bomb? Check out these classic photobombs from Jon Hamm and Jimmy Fallon on some unsuspecting NYC tourists who were just checking out the "Top of the Rock." The segment aired during last night's “Tonight Show.”

The final season of Hamm’s popular tv series 'Mad Men' premiers Sunday April 13 on AMC.