It sounds like he is captivated by visceral violence, music and emotion.

He might like Joker. Also maybe the recent Predator remake named Prey.

Oliver Stone directed Natural Born Killers. Maybe Platoon would work? Or Apocalypse Now?

David Fincher directed Fight Club. Maybe Seven would work?

Natural Born Killers and Fight Club mix some compelling music with romance, violence, and color. With these elements in mind, I have to go to Pulp Fiction as a final recommendation.