Slumdog was an instant success upon hitting theaters in 2008, charming both critics and regular moviegoers alike with its uniqueness, charm, and heart. It was a commercial hit worldwide, ultimately powering the film to a Best Picture win at the Academy Awards. (Source)
Though the film has nothing of what you could call a "cult following," it remains extremely popular on a global scale today. And honestly, we think it should have a cult following: flash mobs in abandoned train stations, anyone?