I have 2 sons that are 8 and 10, so I have been backing up amny DVD's for a while. They are not allowed to use originals, especially ps2. Here are some programs that I have found to be at the top of the list.
Any DVD by slysoft. It makes the computer think that the DVD is NOT copyrighted, so software will not give you the "can't copy copyrighted software" message. But the BEST thing it does is removing the "user prohibited functions". It lets you fast foward, or next track or menu or what ever youant, even when the ORIGINAL WOULD NOT let you. Now you can skip coming attractions, skip the interpol warnings, whatever. I know SOME DVD players overide SOME of this anyway, but many do NOT. My PS2 for example has given me more "that function is not available" than my ex-wife. It also makes all DVD's region zero so they play in any region.
DVD Copy 2 by Inter Video. Best backup program I have found. EASY to use and having 2 computers with DVD burners, it has proven to be the FASTEST. It can compress to 50% AND copy in an hour. Can also convert DVD to vcd, svcd, and DIVX,(I have not tried any of these). Also has other options I have not even bothered to look at, (so I can't name them).
Clone DVD 2 by elby. Seems so be the easiest to use if you want to remove any tracks like coming attractions or other annoying useless tracks. Always error free.
Since I use Any DVD so I can skip anything I don't want to see, I don't bother removing any tracks. Afraid I will screw up something I might want by accident. Even at 50% compression, I have never noticed any difference in quality. But then again I don't have a HD TV.
I admit I might have a DVD or two "backed up" that I shouldn't. But I really do this so when I buy a $15-$20 movie, my kids can scratch a 40 cent blank that can be quickly replaced, instead of ruining the $20 movie.
Steve