Those interested in the coming personal genomics world should check out Amy Harmon's article in the New York Times. Harmon discusses her own foray into getting sampled herself - a personal story on personal genomics. Oh - so ripe for word play. For a good discussion of the paper and some of the related issues see Matthew Herper's blog here.
I personally think the whole field has rushed a wee bit ahead of the science (which reminds me to point out - if you are looking for a new career, I think genetic/genomic counselor is going to be one of the hottest jobs of the future). But nevertheless, I plan to get tested, so I must not think the science is that off.
For other interesting discussions see