The child actor was excellent. Very believable. Bruce Willis was very good in the role--- but Joseph Gordon-Levitt was very charismatic and gifted in his acting. He can really hold your attention in a very understated way. Both of us thought it was a bit violent, but at least it was for a reason. We were a little confused at why the audience laughed at the killings????
But we felt a little strange today, like these characters actually were real! My definition of a good movie.