The Big Bang Theory" The Proton Transmogrification (TV Episode 2014) - Bob Newhart as Arthur Jeffries - IMDb
From Bob Newhart to Stan Lee, 25 great 'Big Bang Theory' guest stars. - cleveland.com
Bob Newhart's force is with 'The Big Bang Theory'
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Big Bang Theory' Cast on Life Lessons From Bob Newhart – The Hollywood Reporter
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Bob Newhart returns to 'Big Bang Theory' with Bill Nye
Bob Newhart returns to "The Big Bang Theory" - CBS News
Bob Newhart - Wikipedia
Bob Newhart is back as a 'Star Wars' ghost on 'Big Bang Theory'
Bob Newhart Fast Facts | CNN
The Big Bang Theory' Season 7: Bob Newhart Returns as Professor Proton
The Big Bang Theory' Cast Is So Happy to Have Bob Newhart Back for the Final Season – Watch! | Entertainment Tonight
Bob Newhart, aka 'Professor Proton,' bids farewell to 'Big Bang Theory'
Bob Newhart Signed "The Big Bang Theory" 8x10 Photo Inscribed "All The Best" (JSA) | Pristine Auction
Big Bang Theory' Bob Newhart returning – The Hollywood Reporter
Bob Newhart to Guest Star on 'The Big Bang Theory', Reprising Role as Arthur Jeffries - Variety
Bob Newhart's force is with 'The Big Bang Theory'
Jim Parsons Recalls the Tear-Jerking Moment Bob Newhart Walked onto 'The Big Bang Theory' Set - Parade: Entertainment, Recipes, Health, Life, Holidays
The Big Bang Theory' Sneak Peek: Bob Newhart is “Professor Proton”
Bob Newhart finally earns an Emmy for 'Big Bang Theory' role - CSMonitor.com
Big Bang Theory': Bob Newhart Returning in Final Season 12 as Proton | TVLine
How The Big Bang Theory Landed Bob Newhart As Professor Proton | Cinemablend
