160GB hard drives now go for under $250. What happens when 4 terabyte drives are available for the same price? That's the equivalent of 210 double-sided, double-layered DVDs, or 840 DVD-quality 2-hour movies, or around 5,000 almost-DVD-quality Divx-encoded 2-hour movies. In a single desktop drive.
Perhaps by about 2010, it will be possible to wear a complete copy of all music ever recorded as a piece of jewelry, perhaps a bracelet or
an oversized earring.