This film noir by Otto Preminger is a wonderfully dark look into a man who is walking between cop and criminal. The fact that it was shot on location in New York greatly compliments its gritty realism. This is a classic noir, and a must see for fans of the style/genre.
The portrayal of Chaplin by Downey Jr. is the centerpiece. While I do not believe the film does a perfect job at showing the artistic genius of the man, it is very entertaining. A bit too ambitious certainly, but it does well for what it is.