I thought Limitless was a pretty interesting movie. It is currently available streaming instantly on Netflix. It centers itself around the ever fascinating topic regarding the fact that humans don't use the entirety of their brains, and humors the affects that would occur if a drug were able to allow one to harness that other portion.
The movie is pretty entertaining. The colors of the movie are dull and gray when Eddie is sober and brilliantly colorful when he is on the drug. Without spoiling it, obviously things start to happen that shakes the foundation of Eddie's new lifestyle.
If you haven't seen it, give it a viewing. If anything, it will probably make you consider what you would attempt with new-found confidence and brainpower.