Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The Doomday Machine

I just wanted you fellow trekkies to know that I consider this episode to be the finest of the entire batch of 78 episodes. It's considered by many to be the most dramatic of the episodes and additionally, It's Spock's best performance, Period. "Vulcans NEVER Bluff!" It should get more credit as an outstanding episode. You won't go wrong with this one.