With the roles of Kirk & Spock (etc) being recast in the new Star Trek movie, I wonder if anyone thinks these are counterfeit, i.e. not the 'real' Kirk & Spock that we have come to appreciate over the years? Essentially, for me, these roles are too bound to the actors playing them to accept anyone else in the part.
I felt the same with Starsky & Hutch - Ben Stiller etc. are not Starsky & Hutch, that's Paul Michael Glaser and David Soul.
Similarly, Kojak is not black (I forget who they cast in the remake), he's Telly Savalas!
It's not like people putting on a play, casting Hamlet or whatever, because we know what the characters look like, their mannerisms, personality etc, all which play a part in the success they had in their roles. To re-cast them seems wrong somehow.