Ask Engadget: Best home backup solutions?

I've been a reader of the site for a long time, so I don't know why I didn't think to contact you when I first started thinking about this. I hope one or many of the superior minds that reads Engadget might have already found a solution to the home backup problem I now have. In this day and age, I would think the "family-geek" (that is, the geek who've found that significant other, settled down, and possibly spawned new proc..er..other geeks) have a large amount of MP3s, videos, and photos of family and friends stored on their computers/phones/whatever. It wasn't until a couple of days ago that the implications of this hit me. Given how fragile data is, what's the best way to back it up? DVD? CD? Tape? It now appears that budget, or badly made CD-R and DVD+-R won't last forever, so long-term storage on that medium is out. So where do we go from here? What is the Engadget readership's take on disaster recovery?