NEW YORK, NY - APRIL 22: Actor Bruce Willis enters the "Late Show With David Letterman" taping at the Ed Sullivan Theater on April 22, 2015 in New York City. (Photo by Ray Tamarra/Getty Images)
NEW YORK, NY - APRIL 22: Actor Bruce Willis enters the "Late Show With David Letterman" taping at the Ed Sullivan Theater on April 22, 2015 in New York City. (Photo by Ray Tamarra/Getty Images)