In Limitless, Bradley Cooper takes an experimental drug and can suddenly live up to his full potential while Robert De Niro tries to understand how this one-time slacker became such a stud. Now I realize that this is a big budget Hollywood film but it's quite a stretch to think that a guy like Cooper isn't already living up to his full potential. Someone with those eyes not being a super rich genius playboy? Come on.
Anyway, the trailer seems decent enough, but could be deceiving. The film, directed by Neil Burger (The Illusionist) sports a very intriguing premise, but when the voice over guy says something about only using 20% of your brain my mind immediately jumps to another Cooper movie - Wedding Crashers - in which we believe that instead of only using 10% of our brains, we only use 10% of our hearts. This movie is exactly like that but with De Niro and guns.