Limitless, 2011

Director:Neil Burger

Stars: Bradley Cooper, Robert DeNiro, Abbie Cornish

Eddie (Cooper), a writer suffering from writer's block, meets up with an old friend, who offers him a pill, which gives one the ability to use 100% of your brain. Eddie tries it, and his life turns upside down- he finishes his book, he understands business, picks up languages just by half-listening to them, etc, etc. He is superman.

When it wears off, Eddie is back to his normal loser self, so he goes to his friend for more, and finds that he has been murdered. Luckily, Eddie finds his friend's stash of pills, which sets him up for a while, but then the side-effects start to take hold. He literally loses track of time, and hits rock bottom when he becomes the suspect in a murder investigation-- and he has no idea if he even has an alibi.

It wasn't great, but not bad either. It had a happy ending, so I was happy enough, really.