Hi. Not exactly sure what you mean by the disks fail. What software are you using? Try Ripit4me. It should work unless your disks are defective and it's free. http://my.afterdawn.com/alkohol/blog_entry.cfm/1417 Links to free software in guide above.
dvdxcopy, dvd decrypter, dvd shrink, when i use these programs it goes through the whole process of copying when the disk is finished it doesn't work in dvd players.
none of those programs are updated any longer, so they cant break the new encryption. i use dvd FAB decryptor, and there isnt a movie i havent been able to do yet. just keep the most up to date version. and its free.
Play it on your pc,using the dvd-rw drive that burned it. Have you backed up other movies? Pirates of the Caribbean 2 was a little tricky,but Jackass 2 didn't have anything special-encryption wise.