Beatles Lyrics: "and he wants you all to sing along. So may I introduce to you..."?

Questions

Deaths 91to92: Former chairman of Yale physics dept.; helped develop the atomic bomb?

Deaths 91to92: Israel PM who made peace with Egypt at Camp David?

Deaths 91to92: Owner of global press empire which included the New York Daily News?

Deaths 91to92: Director of "It Happened One Night" and "You Can't Take It With You"?

Deaths 91to92: Founder of Wal-Mart Stores, Inc.?