There are several situations where you might want to dump a DVD to your hard drive to watch later. For instance, I get significantly better battery life when watching a video from my hard drive than I get when watching it from a DVD. If I’m stuck in a plane for several hours, having my movie on the hard drive can be the difference between finishing the show, or running out of power halfway through. I use a PowerBook and in OS X 10.3 and earlier you could just use the built in Disk Utility to copy a DVD to your disk, but it stopped working in 10.4. However with a few free tools you can accomplish the same thing and more.