The film that effectively launched Martin Scorsese's career, Mean Streets is something of an anomaly, in that it's very much of its time and place - '70s New York in Little Italy - but is still universal and timeless. Robert DeNiro and Harvey Keitel bounce off each other effortlessly and the film and screenplay is replete with Scorsese's trademark black humour, particularly one scene over the correct definition of the word 'mook'.