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Zero. I do not tolerate DRM in any form and I prefer to own my DRM-free movie (and music) collection. I buy DVDs and rip them to my hard disk - which is entirely legal in my home country Germany.

I also don't own an - in my opinion completely useless - AppleTV. My Xbox 360 also serves perfectly as a media extender and is being fed from my Mac Pro via Connect 360.

No it is not, if you need to crack a copy protection.
 
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