Michael Phillips and A.O. Scott review "Iron Man 2", "Babies", "Mother and Child", "Solitary Man", "No one Knows about Persian Cats", and "Casino Jack and the United States of Money". In the 'DVD Out Now' segment, the critics look back on the career of "Iron Man 2" star, Robert Downey Jr. They trace his career from his early character actor days in films like "Back to School" and "Weird Science" to his starring role in blockbusters like "Iron Man" and "Sherlock Holmes".