Big Bang Theory' Sets Bob Newhart's Return in Season 11 – The Hollywood Reporter
Every Bob Newhart Appearance on 'The Big Bang Theory,' Ranked | Decider
The Big Bang Theory Review: Star Wars Apparition - TV Fanatic
Bob Newhart to Guest Star on 'The Big Bang Theory', Reprising Role as Arthur Jeffries - Variety
TV Babble Podcast: Bob Newhart Talks His Long Career & 'Big Bang Theory' Return
The Big Bang Theory" The Proton Transmogrification (TV Episode 2014) - Bob Newhart as Arthur Jeffries - IMDb
Big Bang Theory' sends Bob Newhart into the Force
Professor Proton | The Big Bang Theory Wiki | Fandom
Professor Proton | The Big Bang Theory Wiki | Fandom
Bob Newhart | The Big Bang Theory Wiki | Fandom
The Big Bang Theory" The Proton Resurgence (TV Episode 2013) - IMDb
Professor Proton | The Big Bang Theory Wiki | Fandom
Bob Newhart - Wikipedia
How The Big Bang Theory Landed Bob Newhart As Professor Proton | Cinemablend
Bob Newhart's force is with 'The Big Bang Theory'
The Big Bang Theory" The Proton Resurgence (TV Episode 2013) - IMDb
REVEALED) 'Big Bang Theory' Sets Big Star Return in Season 11
Professor Proton | The Big Bang Theory Wiki | Fandom
Preview — The Big Bang Theory Season 11 Episode 6: The Proton Regeneration | Tell-Tale TV
Bob Newhart returns to 'Big Bang' with Bill Nye the Science Guy as his archnemesis
The Big Bang Theory welcomes back Professor Proton for the new season
Bob Newhart returns as Arthur Jeffries on The Big Bang Theory
The Big Bang Theory: Every Cameo, Officially Ranked
The Big Bang Theory Is Bringing Back Bob Newhart as Professor Proton
