Doug: I'll make no claim to the acting talents of either of these men, but I'll just say that I enjoyed Bewitched more after Dick Sargent replaced Dick York as Darrin. Perhaps it's because the program was then in color, as opposed to the early years when it was still in B&W (or was that only because all we had was a B&W television?).
Doug: To say that Ringo Starr's replacement of Pete Best was an upgrade for the Beatles might be the overstatement of the century. But are there other musical replacements that come to mind?
Karen: My partner asked me to contribute to this post, and one of the first cases that came to mind was the disappearance of Yeoman Rand from the Enterprise by the second season of the original Star Trek. Having a love interest for Captain Kirk on the ship was far too limiting -by removing the character, it opened up more possibilities for Kirk with guest stars, and besides, could anyone see the Captain settling down with one woman?
Doug: So there are a few examples from us. How about our readers' thoughts on the matter?