In the middle of his show, Conan O'Brien told his viewers to go watch Dave Letterman's last show.



"Our long national nightmare is over. Letterman is retiring." [Barack Obama Via Late Show]

David Letterman's last show was a star-studded affair and it wasn't just the stars present there who bid farewells. 
In the middle of his show, Conan O'Brien told his viewers to go watch Dave.
"Ok, now it's 11:35. Record us but switch to Dave! Bye!" [Conan O'Brien]
Jimmy Kimmel also asked his audience to watch Letterman instead of his show.
"I'd like it if you watched that instead of our show...Especially if you