The Lunchbox is a masterclass in acting. Irrfan Khan , as the stoic, cynical Saajan, delivers one of his finest performances, conveying immense loneliness and slowly thawing affection through subtle gestures. Nimrat Kaur brings immense vulnerability and quiet strength to her role as Ila. Nawazuddin Siddiqui , playing Shaikh, a cheerful colleague in training, adds a delightful, often humorous counterpoint to Saajan’s gloomy demeanor.