xflysoft is about the best free DVD ripper software there is
. It runs on Linux, Windows and Mac. It will just about rip anything you throw at it and even encode it. While I personally don't find the interface that impressive what it lacks in visually it makes up for with functionality. You can tweak just about every possible setting you could ever wish to tweak to get that picture perfect quality. You can download it:http://download.xflysoft.com/blu-ray_dvd_to_iriver_ripper.exe.You can choose many pre-defined formats or create your own. You can even queue up encodes so you can get a good nights sleep in while it does its thing.