Josh Holloway, a.k.a. Sawyer, visited Jimmy Kimmel Live! to talk about working with Tom Cruise on Mission: Impossible - Ghost Protocol, and the powers (and hardships) that come along with his signature stubble.
Barbara Walters showed up on The Late Show to debate the merit in many of her Fascinating People with Letterman, touching upon the Kardashians and Donald Trump. But the most mysterious part was the secret name of the Most Fascinating Person of the Year, whom nobody knows about...but Letterman thinks he cracked the code.
Dana Carvey appeared on The Tonight Show in character as Ron Paul, Barack Obama, Billy Crystal, Regis Philbin, Rain Man and more.
Finally, back on The Late Show, Saturday Night Live star Bill Hader stopped by to prove that he's funny no matter what he's talking about: he told a story about a family ski-trip from his childhood that went awry and resulted in a Swedish man coming to the rescue.