Comedian Louis CK found a corpse floating in the East River just south of the Queensboro Bridge this summer, he said on "Late Show with David Letterman" Tuesday night. While out boating, he heard a Coast Guard message about a body. "I looked down, and there was the dude in the water . . . just a floating dead person," he told the talk-show host. The comedian found the experience "creepy and weird and I felt embarrassed for him a little bit. I thought about it. This was a person. This was a story, a life. " He waited at the site until police and fire department marine units arrived, he said.