Whether you're ripping your DVDs because the Netflix movies are almost always scratched (and ripping them plays back smoother) or you're just a cheap S.O.B. who doesn't like paying for stuff, here's a guide to make the process easier.
Why would you use this? Well, besides archiving your movies on your home theater PC (HTPC), you can use this as a first step in encoding DVDs onto various portable media players. Also, backing up DVDs that you've actually purchased is a good way to make sure your $15 doesn't go to waste the next time some movers decide to bounce your boxes off the side of a Ford Focus.
Hack Attack: One-click DVD rips [Lifehacker]