The CBS division said Sunday night's honorary special to Cronkite, who died Friday at the age of 92, will feature top political and entertainment figures sharing their memories of the former "CBS Evening News" anchorman.
"He brought us all those stories large and small which would come to define the 20th century," Obama said of Cronkite. "That's why we love Walter, because in an era before blogs and e-mail, cell phones and cable, he was the news."
"There is something that is so quintessentially American about Walter Cronkite," Couric offered, "his honesty and candor in difficult times… if someone has integrity, to me, that is the finest attribute they can have."
"His legacy will be one of the great legacies of great Americans. It sounds overstated, but it isn't. He's that important to us," Clooney said of the famed newscaster.