Jim Carrey arrives at the backstage entrance before the final taping of the "Late Show," with David Letterman at The Ed Sullivan Theater in New York City on May 20, 2015. Letterman taped his farewell episode of "The Late Show" on Wednesday afternoon, then walked backstage as the Foo Fighters closed out the show with a performance of "Everlong." Photo by Dennis Van Tine/UPI | License Photo
Jim Carrey arrives at the backstage entrance before the final taping of the "Late Show," with David Letterman at The Ed Sullivan Theater in New York City on May 20, 2015. Letterman taped his farewell episode of "The Late Show" on Wednesday afternoon, then walked backstage as the Foo Fighters closed out the show with a performance of "Everlong." Photo by Dennis Van Tine/UPI | License Photo
Jerry Seinfeld and Jessica Seinfeld arrive at the backstage entrance before the final taping of the "Late Show," with David Letterman at The Ed Sullivan Theater in New York City on May 20, 2015. Letterman taped his farewell episode of "The Late Show" on Wednesday afternoon, then walked backstage as the Foo Fighters closed out the show with a performance of "Everlong." Photo by Dennis Van Tine/UPI | License Photo
Hilaria Thomas Baldwin, Carmen Baldwin and Alec Baldwin arrive at the backstage entrance before the final taping of the "Late Show," with David Letterman at The Ed Sullivan Theater in New York City on May 20, 2015. Letterman taped his farewell episode of "The Late Show" on Wednesday afternoon, then walked backstage as the Foo Fighters closed out the show with a performance of "Everlong." Photo by Dennis Van Tine/UPI | License Photo
Steve Martin arrives at the backstage entrance before the final taping of the "Late Show," with David Letterman at The Ed Sullivan Theater in New York City on May 20, 2015. Letterman taped his farewell episode of "The Late Show" on Wednesday afternoon, then walked backstage as the Foo Fighters closed out the show with a performance of "Everlong." Photo by Dennis Van Tine/UPI | License Photo
Tina Fey arrives at the backstage entrance before the final taping of the "Late Show," with David Letterman at The Ed Sullivan Theater in New York City on May 20, 2015. Letterman taped his farewell episode of "The Late Show" on Wednesday afternoon, then walked backstage as the Foo Fighters closed out the show with a performance of "Everlong." Photo by Dennis Van Tine/UPI | License Photo
Tina Fey arrives at the backstage entrance before the final taping of the "Late Show," with David Letterman at The Ed Sullivan Theater in New York City on May 20, 2015. Letterman taped his farewell episode of "The Late Show" on Wednesday afternoon, then walked backstage as the Foo Fighters closed out the show with a performance of "Everlong." Photo by Dennis Van Tine/UPI | License Photo
Peyton Manning arrives at the backstage entrance before the final taping of the "Late Show," with David Letterman at The Ed Sullivan Theater in New York City on May 20, 2015. Letterman taped his farewell episode of "The Late Show" on Wednesday afternoon, then walked backstage as the Foo Fighters closed out the show with a performance of "Everlong." Photo by Dennis Van Tine/UPI | License Photo
Peyton Manning arrives at the backstage entrance before the final taping of the "Late Show," with David Letterman at The Ed Sullivan Theater in New York City on May 20, 2015. Letterman taped his farewell episode of "The Late Show" on Wednesday afternoon, then walked backstage as the Foo Fighters closed out the show with a performance of "Everlong." Photo by Dennis Van Tine/UPI | License Photo
Julia Louis Dreyfus arrives at the backstage entrance before the final taping of the "Late Show," with David Letterman at The Ed Sullivan Theater in New York City on May 20, 2015. Letterman taped his farewell episode of "The Late Show" on Wednesday afternoon, then walked backstage as the Foo Fighters closed out the show with a performance of "Everlong." Photo by Dennis Van Tine/UPI | License Photo
Fans wait at the backstage entrance before the final taping of the "Late Show," with David Letterman at The Ed Sullivan Theater in New York City on May 20, 2015. Letterman taped his farewell episode of "The Late Show" on Wednesday afternoon, then walked backstage as the Foo Fighters closed out the show with a performance of "Everlong." Photo by Dennis Van Tine/UPI | License Photo
A news truck is parked outside of the Late Show Marquee before the final taping of the "Late Show," with David Letterman at The Ed Sullivan Theater in New York City on May 20, 2015. Letterman taped his farewell episode of "The Late Show" on Wednesday afternoon, then walked backstage as the Foo Fighters closed out the show with a performance of "Everlong." Photo by Dennis Van Tine/UPI | License Photo