Journey to Babel? (the clue implies his second appearance, if not, then you know what my next guess will be...)
1. Mark Lenard played both ear roles.
2. Romulan Commander is not quite the same character as Sarek, but they have the same voice. (What a voice, too.)
1. Mark Lenard played both ear roles.
2. Romulan Commander is not quite the same character as Sarek, but they have the same voice. (What a voice, too.)