Instruct: Classify a review as either positive or negative.
Query: Classic Sci Fi

If you are a fan of 50s, 60s and 70s SciFi, this is a great movie. Even though it's a bit dated, some of the issues (over population, global warming, polution, etc.) are very much a part of today's environment. Very thought provoking story line and reasonably good acting contribute to the movie's enjoyment. The DVD's picture quality is good and views well. Overall, a good solid movie and should be part any serious SciFi fan's collection.