Ethical Gray Areas

Hypothetical situation:

I bought the latest Harry Potter movie on Blu-ray to watch on vacation, but I left the disc at home. I really want to watch it and my kids are going nuts with nothing else to do at night, so I download a pirated version of the disc from BitTorrent.

So, would this be legal since you have already purchased the content and are simply downloading a copy, or is it illegal since you are downloading stolen intellectual property.

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Also, is it more important to you to stay on the legal straight and narrow or do quasi-illegal things which your conscience tells you is morally OK? How many of you do pirate content? And how many of you discourage friends from piracy?