Best classic Hollywood movies?

The Magnificent Ambersons, Rebel Without a Cause, Giant, East of Eden, On the Waterfront, It's a Wonderful Life, The Wild One, Mr. Smith Goes to Washington, The Maltese Falcon, Roman Holiday, Breakfast at Tiffany's, Arsenic and Old Lace, Charade, The Godfather, Chinatown, French Connection, The Sting, The Last Picture Show, To Kill a Mockingbird, The Graduate, The Manchurian Candidate, In Cold Blood, The Treasure of the Sierra Madre