Not a lawyer but...
USA: My understanding is that you can legally make a backup copy of your own media. But tools that circumvent ANY electronic protections are outlawed under DMCA. [Anyone been asked to 'pull-over' their laptop on a stateside trip? Make sure you don't have DVDdecrypter and the likes on it.]
UK/EUR: DVDdecrypter type tools are not illegal [yet - EUR law impending] but backup copies not allowed under UK law [no concept of 'fair use']. However proving damages is unlikely and the court system is not so an*l.