David Letterman signed off from late-night television after 33 years Wednesday night. Take a look at other high-profile personalities and their exits from particular shows or TV altogether.
Host Conan O'Brien left his own "Late Night" show, which ran for 16 years, to host "The Tonight Show with Conan O'Brien" in 2009. The show only lasted for eight months before he was let go. In November 2010, O'Brien launched "Conan" on TBS.