Instruct: Classify the given review as either positive or negative.
Query: Looks great -- when and if it works

Bought a new top-end SONY Blu-ray player. Bought a few Blu-ray disks - everything was okay. Planet Earth is a different story. When it works, it looks great. Problem is, it hangs up. Almost every title locks up the DVD player. Even with Amazon, returning a product is a hassle - it takes way too much time. Shame is, I was really looking forward to this DVD.......