http://www.netflixprize.com/
"The Netflix Prize seeks to substantially improve the accuracy of predictions about how much someone is going to love a movie based on their movie preferences. Improve it enough and you win one (or more) Prizes. Winning the Netflix Prize improves our ability to connect people to the movies they love. "
Off topic but thought some of the programmers/designers could get into this
"grand prize that is being offered is ONE MILLION DOLLARS!"
