After seeing the first trailer, I decided to stay neutral about this movie, but now that the second one is out, I must say that it looks quite promising. Check it out:

The plot of Kick-Ass concerns a teenage boy, Dave Lizewski (Aaron Johnson), who decides to become a real-life superhero after being inspired by the heroes of comic books. He soon encounters a mysterious vigilante called Big Daddy (Nicolas Cage), and his daughter Hit-Girl (Chloë Moretz), who are working to bring down the local drug baron Frank D’Amico. Source: Wikipedia