balloons. >> and getting stars to be his comedic side kicks. >> i know who has your balloons tough guy. >> even getting matt into the act. >> how are you doing, matt? everything okay? >> it's a little warm dave. >> letterman spoke to jane pauly for cbs sunday morning about closing this chapter in his storied career. >> any enormous uprooting change in my life has petrified me. really petrified me but once i have come through the other side the reward has been unimaginable. >> in the '80s letterman was the first host of late night here at nbc. >> let's go on inside and see how this baby works. >> reporter: carving out an hour of his ground breaking comedy that followed his mentor johnny carson. >> you could be a guest, guest host. >> could to think of it you could have the damned thing. >> when letterman was passed over to host the tonight show