POPSUGAR Celebrity Conan O'Brien TV Tonight: Conan O'Brien's Last Late Night TV Tonight: Conan O'Brien's Last Late Night by Celebrity 2/20/09 0 Shares Like us on Facebook Sign up for our daily newsletter > Follow us on Pinterest Click to ReadTV Tonight: Conan O'Brien's Last Late Night A little more than 15 years ago, Conan O'Brien took over NBC's Late Show desk, filling the seat once occupied by David Letterman. Tonight, he'll say his farewell to studio 6A and start preparing to take over for yet another comedy icon. Read More Conan O'Brien Conan O'Brien The Mystery of Jake Gyllenhaal's Height Has FINALLY Been Solved . . . Right? That Time Deadpool Gave Conan O'Brien a Massage Using Panda Tears Ryan Reynolds Jokes About Baby James's First Words, Gushes Over "Mercenary" Blake Lively Jack Black and Boy George Have a Viral Moment Singing "Hello, I Love You" POPSUGAR, the #1 independent media and technology company for women. Where more than 75 million women go for original, inspirational content that feeds their passions and interests. Be in the Know With OurCelebrity and Entertainment Newsletter Personalize Young Hollywood A-Listers TV Movies Sign up with facebook or By signing up, I agree to the Terms and to receive emails from POPSUGAR.