At their recent spit party in Manhattan, "personalized genetics" company 23andMe wowed the stars, and invited them to have their DNA tested. Just spit in a cup, and have your sample analyzed for $399, a pretty good deal.
Better act fast though. The FDA is currently cracking down on companies like 23andMe, in an apparent attempt to limit a citizen's right to self-knowledge. Fortunately, some people are now fighting back against the regulators (see, for example, Wired Magazine's "Top 10 Reasons that Regulators should not hinder Genetic testing")