A truly great TV catchphrase is a rare thing indeed. Not only must it be so fully embraced by the public that it takes on life outside the television screen, but it also must speak volumes about the ...

Sheldon Cooper may return in new spinoff Stuart Fails to Save the Universe, but it might not be the triumphant comeback that a lot of fans would hope for or expect. Stuart’s The Big Bang Theory ...

Add Yahoo as a preferred source to see more of our stories on Google. Sheldon knocking on a door on The Big Bang Theory - CBS "The Big Bang Theory" featured many recurring habits that defined Sheldon ...

"The Big Bang Theory" featured many recurring habits that defined Sheldon Cooper (Jim Parsons), but few were as consistent as his practice of knocking on doors three times — most often when visiting ...