Lucy by Luc Besson is a great sci-fi. If you set aside a few glaring scientific flaws concerning the brain and evolution, it is quite captivating. The action and the special effects are spectacular. Scarlett Johansson is right on her best game. The scenario is solid, except towards the end where it becomes a bit soft. The ending itself, however, is just perfect.
A should watch, especially if you're a sci-fi, action or Johansson fan.
8*/10