Sheldon, played by Jim Parsons, right, and Leonard hire Professor Proton, played by guest star Bob Newhart, left, to perform, on "The Big Bang Theory."
Sheldon, played by Jim Parsons, right, and Leonard hire Professor Proton, played by guest star Bob Newhart, left, to perform, on "The Big Bang Theory." CBS ENTERTAINMENT
Sheldon, played by Jim Parsons, right, and Leonard hire Professor Proton, played by guest star Bob Newhart, left, to perform, on "The Big Bang Theory." CBS ENTERTAINMENT

Bob Newhart, Billy Ray Cyrus among holiday weekend acts

May 25, 2018 02:00 AM