My favourite part was the finale scene, I really liked the fact they all shook hands at the end and forgave each other. I really liked the music and the songs, the 'We could've been anything that we wanted to be' song was the best.
The way it was choreographed was amazing, especially the fighting on the car at the end of the 1st half, the set and lighting was really effective.
The kid who played Bugsy Malone was really good. I would recommend it to any age.