Martin Scorsese walks mean streets. So the idea of him directing a family film in 3D struck some as a joke. Hugo proves the joke is on them. In Scorsese's hands, 3D becomes an art. The filmmaker sweeps us headlong into the action as Hugo (Asa Butterfield), a 13-year-old orphan who lives behind the clock in a Paris train station in 1931, sneaks us into the station's secret corridors and inside the clock, with its jaw-dropping view of Paris. Here the technology serves the story and takes your breath away.