Bob Newhart to return to 'The Big Bang Theory' - Chicago Tribune
Big Bang Theory': Bob Newhart Returning — Season 9 Spoilers, Casting | TVLine
Big Bang Theory' Books Bob Newhart's Return, Adds Bill Nye – The Hollywood Reporter
The Big Bang Theory' Season 11 Spoilers: Bob Newhart Returning | TVLine
How The Big Bang Theory Landed Bob Newhart As Professor Proton | Cinemablend
Every Bob Newhart Appearance on 'The Big Bang Theory,' Ranked | Decider
Kaley Cuoco, Melissa Rauch, Bill Prady, Mayim Bialik, Chuck Lorre, Kunal Nayyar, Simon Helberg, Jim Parsons, Johnny Galecki, Bob Newhart, Steve Molaro - Bob Newhart and Kunal Nayyar Photos - Zimbio
Big Bang Theory': Bob Newhart Returning in Final Season 12 as Proton | TVLine
Big Bang Theory' Enlists Bob Newhart – The Hollywood Reporter
From Bob Newhart to Stan Lee, 25 great 'Big Bang Theory' guest stars. - cleveland.com
Bob Newhart on The Big Bang Theory - TV Fanatic
Bob Newhart | The Big Bang Theory Wiki | Fandom
Bob Newhart's force is with 'The Big Bang Theory'
Bob Newhart Returns to The Big Bang Theory in Season 11
Bob Newhart Set to Return to 'The Big Bang Theory'
Bob Newhart to Guest Star on 'The Big Bang Theory', Reprising Role as Arthur Jeffries - Variety
Big Bang Theory' Cast on Life Lessons From Bob Newhart – The Hollywood Reporter
Bob Newhart, aka 'Professor Proton,' bids farewell to 'Big Bang Theory'
The Big Bang Theory' Season 7: Bob Newhart Returns as Professor Proton
The Big Bang Theory': Bob Newhart returns as Professor Proton in final season, and the cast can't be happier | MEAWW
Every Bob Newhart Appearance on 'The Big Bang Theory,' Ranked | Decider
Bob Newhart and Bill Nye to guest on 'The Big Bang Theory' | EW.com
Bob Newhart returns to 'Big Bang Theory' with Bill Nye
Bob Newhart and Bill Nye to guest star on 'Big Bang Theory'
From Bob Newhart to Stan Lee, 25 great 'Big Bang Theory' guest stars. - cleveland.com
TV Babble Podcast: Bob Newhart Talks His Long Career & 'Big Bang Theory' Return
Bob Newhart's 'Big Bang Theory' role might get bigger
