Hmmm, keeping Die Hard or Breakfast at Tiffany's on your PC isn't such a good idea, after all, and don't even mention those hours and hours of squinchy video your Uncle Ira shot at DisneyWorld. Well, that may be true now, but not for much longer.
Current technology depends on magnetic storage of data onto a disk or tape.
We're talking storing data down at the molecular level, keeping perhaps 300-400GB on a disk the size of a quarter, or a crystal the size of a sugar cube.