NEW YORK (CBSNewYork) — David Letterman has left people laughing for more than 30 years as a late-night talk show host. Now, he has just three shows left before he retires.

CBS2’s Diane Macedo and Andrea Grymes interviewed Christian Blauvelt, deputy culture editor of BBC.com, about Letterman’s most memorable moments.

Click the video player above for the full interview.