"We're gonna need a bigger boat"

Since my first year in University where I discovered MP3s (old school - '95 baby) I realised that we were all going to need more storage.
Jump forward 13 years and that need has grown exponentially.

Right now I have at home (excluding flash drives and SD cards etc.):
1TB in my Main PC
160GB in my laptop
500GB (mirrored) in a NAS box
250GB in my PS3
250GB WD Passport drive (for backups)
320GB WD Passport drive (for general use)

And I think that's still not enough.

I already have all my CDs ripped to MP3/AAC formats and stored on my PC (currently 80GB or so worth) - but my new plan is to do a similar exercise with my DVD collection (around 400 movies).

Estimating around 1.5GB per movie that will result in at least 600GB of required storage.
That's ignoring the fact that I'll undoubtedly want to back them up (I'd hate to spend all that time ripping them to lose them all) - so that's 1.2TB of storage.

I know I'm not alone in attempting such a project either, so I think of the amount of storage that's out there at the moment and the amount that's needed and it's mind blowing (for a geek anyway!)