This movie is excellent, and consists of a very talented cast! Robert Dinero is the PERFECT Taxi Driver! There is quite a bit of sexual content, references, etc... Also, a main character takes his girlfriend to a pornographic movie. There is a 12 year old prostitute, as well as many others. Other than that this movie is great! There is however some pretty graphically violent content. The violence itself isn't that bad, there is in fact only ONE shootout in the entire film, but the sheer abruptness holds a lot of shock factor. A man's hand is blown to pieces, a man is shot in the stomach, face, then finally stabbed to death, another man has his brains splattered all over the walls. And a few other graphic deaths, lots of blood and gore to be seen here. Most teens won't appreciate the complex storyline, as it is a rather slow movie and spends a lot of time on character development. However if your OLDER teens are interested, and you feel they are mature enough to handle this somewhat disturbing film. Then I think you should let them watch it, all in all it should be OK for most teens 15+.