Gattaca - 1997
Starring Ethan Hawk, Jude Law & Uma Thurman, Gattaca is the story of bio-engineering in the future. Wealthy children are engineered to be better and superior. They're called "Valids". They are given the best jobs and social elite status. Ethan Hawke an "Invalid" decides to pay to take the identity of the crippled Jude Law in order to leave behind his janitorial work and become an astronaut. A Job which he could never dream of having without completely masking his poor identity. It had been years since I watched this movie but it held up. It's definitely worth a watch tonight if you haven't seen it yet and also worth another watch if you have.
It did pretty well on Rotten Tomatoes as well: