Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Digital Video Essentials

I have been interested in home theater, as well as audio video calibration for years now and I must say that this disc is the absolute best value in home theater that I have ever found!!! Not only does it give you a lot of helpful information concerning the industry today and where it is going, but it also gives you more than the necessary amount of test patterns/signals in order to calibrate your system to the best of it's ability.I never realized how poorly my system was setup until I was able to use this disc. My picture never looked so GOOD! Even the family cannot believe the results!I really enjoyed the tutorials - very helpful! For anyone interested in home theater, into home theater, or looking to take their education to a whole new level I would highly recommend this DVD.