For those of you using VLC for DVD playback, you may also want to try the freeware/donationware program XinePlayer. It is also (apparently) going to be affected by this ruling, but ignoring that, it is actually a pretty nice DVD player that offers many of VLC's features in a simplified and streamlined package. XinePlayer also offers multiple de-interlacing options (similar to VLC) and it seems that XinePlayer uses fewer CPU cycles to implement de-interlacing (which could benefit lower-end systems).
XinePlayer is available on MacUpdate, so get it while you can. In fact, XinePlayer depends upon some of the work done for VLC and upon several of the open source efforts that may also be affected by this EU ruling.
Here is the link to the MacUpdate download:
http://macupdate.com/info.php/id/17492
As for software patents, I'm generally against them. The industry already has copyright and trade secret protections that apply to software and I believe that you should not be able to patent a general idea or technique (regardless of how "new") that can be implemented in a thousand different ways (actually, on a source-code level in an infinite number of ways, some better, some worse).
In a way, being able to patent software is almost like being able to patent an idea for a story or movie. So, I'm going to "patent" an idea for a story about a man and woman falling in love. After that, no one will be able to write
any story about a man and woman falling in love without first licensing my story patent. Crazy, yet some some software patents are just about as silly. In my opinion, the above is what copyrights are for, and software can be copyrighted to protect a specific implementation of a technique or idea. IMO, software patents are out of control and we need new laws or changes in the law to restrict their use.
EDIT: sorry, XinePlayer is not on VersionTracker, use MacUpdate instead.