Cambridge Massachusetts 2003 venture capitali start-up Helicos Biosciences claims that by 2007 Helicos will be selling a machine that will sequence a person's genome for $5000.
Incredibly cheap DNA sequencing will be occasion for a massive biomedical and social science project to compare the DNA sequences and large amounts of biomedical and behavioral and other information between millions of people.
Some of the commenters have expressed skepticism as to the plausibility of this timeline (rightly so, I suspect - it seems a little aggressive). However, the more important thing here is that venture funding organizations have bought into this timeline ... and are presumably still buying into this timeline. This is the sort of short time frame that venture investors like to put money on; hence more funding leading to more progress across the board leading to more aggressive estimates of short time frames. It's a positive feedback loop that drops ever more money into development until breakthroughs are made or the bottom drops out of this miniature bubble.