You know that there were, famously, two actors who played Darrin Stephens in the classic series Bewitched.  But in 14 episodes, the role was handled by neither Dick York nor Dick Sargent.  Who was this virtually unknown third Darrin?  (Hint: it was neither of their stunt doubles, nor is it an "Alan Smithee" who disavowed being associated with the series.)  The answer is actually difficult to talk about, because in 14 episodes the character of Darrin was played by a non-entity: not merely an invisible man, but an anti-person, if you will a Ne'er N. Stephens.  Though spoken to on the telephone, and performing his advertising job either at the office or out of town, Mr. Nobody played Darrin.  The key issue is that the character still figured into these plots — his presence and importance was never ignored.  Darrin existed in those 14 episodes, though played by a no-name, a zero.