Philippe Petit’s “artistic crime of the century” carries a poignancy now with the destruction of the World Trade Center buildings. This week, 34 years ago, Petit spent 45 minutes on a high wire suspended between the Twin Towers, crossing back and forth eight times. He was arrested but charges were dropped in exchange for him giving children a demonstration of his skills in Central Park. “Man on Wire” is a documentary of his feat and its careful preparation. The movie has been making the film festival rounds all year and, because of the stealthy nature of the event planning, it’s been likened to a “heist film.”