"Affleck? No. I'm 75 and still not bald. Try again."

Spock gets veto power.

While [Leonard] Nimoy has no inside info on the new film, he did make an interesting comment — that he has the contractual right to approve the casting of any other actor for the role of Spock. Nimoy hasn't said whether he'll exercise that right, but it does allow him to at least have some input in the upcoming film.