Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great entertainment for my young son...

These UMD things are great. My son is 2+ years and he loves it when I show him a new movie he can watch on the PSP. We just went on vacation with many hours on plane after plane. Open Season was watched many times without bothering anyone. I recommend it. We have a few of these movies for PSP including Incredibles, and Toy Story. They are great and handy.