he's hosted the tonight show as often as johnny carson and now he has his very own show, weekday mornings at 10:00 on nbc. [ laughter ] >> ladies and gentlemen, what you're witnessing here is a good idea gone awry. a fun filled surprise turning into an incredible screw up right here. >> david letterman originally had a one-hour daytime show and nbc, after like 13 weeks, decided to cancel it. >> today it our last show on the air. monday las vegas. have these people been frisked? >> it was a dismal failure in terms of the ratings but not in terms of introducing us to letterman. >> thank you for being with us tonight. >> in smite of all this nonsense that goes around in the background, stay with us here in new york. we like having you. >> dave is back in new york.