Dave.

From The Week:

“David Letterman is retiring on Wednesday, after 33 years on late-night TV, starting on NBC then, after getting passed over for The Tonight Show, launching a late-night juggernaut at CBS. He’s had a lot of great moments, transformed late-night TV into something more fun and unpredictable, and made a lot of people laugh and feel less alone. His finest moment wasn’t funny, though. It was the Late Show on Sept. 17, 2001, his first after the Sept. 11 terrorist attacks…”

http://theweek.com/speedreads/556004/watch-david-lettermans-finest-8-minutes