A tribute special featuring some of the biggest names in comedy reminiscing about the late, great stand-up. It's a great way to celebrate and remember Greg, but if you want to do more than just celebrate and remember him, you now have an opportunity to help out his family too.

Late Night with Conan O'Brien is an American late-night talk show hosted by Conan O'Brien that aired 2,725 episodes on NBC between 1993 and 2009. The show featured varied comedic material, celebrity interviews, and musical and comedy performances. The second incarnation of NBC's Late Night franchise, O'Brien's debuted in 1993 after David Letterman, who hosted the first incarnation of Late Night, moved to CBS to host Late Show opposite The Tonight Show. In 2004, as part of a deal to secure a new contract, NBC announced that O'Brien would leave Late Night in 2009 to succeed Jay Leno as the host of The Tonight Show. Jimmy Fallon began hosting his version of Late Night on March 2, 2009.