Works for me. I have libdvdcss2 installed.
This works for encrypted content, but:
1. Its not available in mainstream distros by default. And is not 100% legal. 2. It still does not help with newer DVDs such as Wall-E (and newer Disney / Pixar DVDs). These has additional copy protection ( E.g. unorthodox track structure). With Kids at home, I buy couple of such DVDs every other month.
-Shamit