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The Big Bang Theory’s Johnny Galecki says happy birthday to Professor Proton Bob Newhart as he turns 91
The Big Bang Theory star Johnny Galecki has said happy birthday to guest star Bob Newhart, who recently turned 91.Johnny, 45, took to Instagram to share a snap alongside the actor, who played Arthur Jeffries – aka Professor Proton – in the sitcom, to wish him well following his special day.He wrote: ‘Happy birthday to a massive talent, a special influence to me, an “all around nice guy”, and fellow Chicago boy, Bob Newhart.‘@bobnehartofficial Have a great one, my friend.’Bob first appeared as Arthur Jeffries in the sixth season of The Big Bang Theory.