I've seen this asked in various forums with varying responses.
Lets see what hexus comes up with.
I want to backup the content on my Sky+ box, I've just been offered a mega deal from Sky on rejoining HD and have some classic TV on there, - Schumacher's Last race, the last Italian GP etc etc. If I take up the option, I have to move reasonable quickly due to the offer, and the fact that I'm having building work done so have a chance to hide all the cables better.
The box has a USB port on the front, but I've read and heard various arguments on the encryption / ability to play back the files without sky.
I've read numerous options, so lets see what hexus says.