There is a lot of dark humor in the movie. In one scene Tom Cruise's character chases his own eyes as they are rolling down a corridor. Then there are a lot of funny criminal type characters. The two best are played by Jason Antoon and Peter Stormare. In both cases the humor comes from some derange characteristic of the character. Making for very funny, but also very dark jokes. There is an expositional scene with an elderly woman played by Lois Smith in which they talk about some truly terrible things some of which are political. But the scene is hilarious. And it has one of the most weird character moments in the entire Spielberg's filmography. I'm not gonna spoil it. But I'm pretty sure you will notice it.
Jason Crown is a 12 to 14 year old kid ( because I wanted to play him ) who discovers one day that he has a superpower that let's him fly. There is a theory being developed that homo-sapience are not the final stage. And that there would be homo-Leviticus ( a flying human ). Jason Crown is one of the first homo-Leviticus.