David Letterman

The indie-rock duo Broken Bells covered the Beatles' 'And I Love Her' on 'Late Show With David Letterman' last night and threw in a sample of ''I Am the Walrus' for good measure. You can watch a video of their performance above.

Paul McCartney and Ringo Starr may mark the 50th anniversary of Beatlemania hitting U.S. shores next month by performing together. Showbiz 411 reports that the two surviving Beatles could show up on David Letterman's late-night show during his network's week-long celebration of the Fab Four.

The late-night landscape will look drastically different by this time next year, now that Jimmy Fallon will take over for Jay Leno as host of 'The Tonight Show' in early 2014, but some things will at least stay the same. Extending his own 2014 contract, David Letterman has re-signed to stick with CBS' 'Late Show with David Letterman' through at least 2015.

To celebrate David Letterman's 20th anniversary of working on CBS, Bill Murray showed up and made quite a spectacle.