I really wanted to bring my DVD’s on a recent cross-country flight. I was familiar with backing them up using a PC, but I had never done it on the Mac. I played around with several options and decided that Handbrake is the best solution if you want a file for your iPod or in iTunes while Mac the ripper is the best if you want a dvd image file at full quality.
You can find a complete description of the process here and here while Macworld also has a nice write up here. This seems pretty satisfying, but I think I would still prefer to remaster the disk like I did on the PC. I was able to strip out the multiple languages, menus and extras to produce a much smaller DVD image that I could load up in any DVD playing software (including windows media center player in the living room ).