The first 30 minutes or so of Gattaca are pretty great. We're introduced to a not-so-distant (and relatively plausible) future world where "natural" birth is performed in vitro under the guidance of geneticists who carefully engineer/select the most genetically gifted and healthy zygote. From birth, people are identified and defined entirely by their genetic makeup and the diseases to which they are or are not predisposed. The film does a really great job of exploring the philosophical, moral, and legal implications of such a society, and the resultant discrimination that "invalids" - those who are born in vivo - face both in their health insurance and job prospects. There's also a nice underlying message that is touched upon: often times the best person for a job may not be the absolute smartest or healthiest candidate, but the one who is the most passionate about the work.