Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent movie, but DVDs are bad

I purchased this movie as a gift. It won, I believe, the GLADD award in 2007 for best film. Excellent movie and very, very interesting as to how it was actually developed and produced.I was incredibly frustrated when, near the end of the movie with only about 15 minutes left the DVD froze. I found no way to advance the film even using the chapters.Thankfully, Amazon did replace the film with another DVD. Sadly, it froze up in the exact same spot. Apparently there was a glitch in the production of these DVDs. I did manage to get to the end of the film with many stops and starts. Very distracting.