Taxi Driver for some reason does not transfer well to the small screen (TV). It is one of those film's that are made for Movie Theaters. In a dark theater with a large screen adds so much more to Scorsese's visual's.

Those who did'nt care for it. Do yourself a favour and try and catch it at a Revival House.
It's so much better in a theater.

BTW no one has mentioned the great performance of Harvey Keitel.