this is -- i mean, i put him right up there in sports entertainment goes with like the beatles. >> i'm not laughing. i totally agree with you. absolutely. >> he has shaped our lives and our comedy culture like nobody. >> oh, my gosh. remember, i'm trying to think. i've never been more nervous in my life because he is so funny and to go on the show, you've got to be ready. but only one more year, i guess. david letterman stunned his studio audience and a lot of people around the country when he announced his run on late night tv is coming to an end. >> some time in the not too distant future, 2015, for the love of god, paul and i will be wrapping things up and taking a hike. thank you. thanks to everybody. >> when he completes his run, david letterman will be officially the longest serving host in late night tv history. it all started so long ago when