Actor and comedian Chris Rock talks about his new movie "Top Five." Conan O'Brien talks about David Letterman, late night television in the age of the internet, and going to Cuba. Actor and comedian James Corden discusses his entrance into comedy and assuming the mantle of host of "The Late Late Show." Comedian Aziz Ansari presents his new book, co-authored with NYU sociologist Eric Klinenberg, "Modern Romance: An Investigation."