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Air Doll, a 2009 Japanese film, stars Bae Doona as an inflatable doll brought to life by a lonely man's wish. The film explores themes of love, loneliness, and the nature of humanity through the relationship between the man and the doll. Bae Doona's performance as the doll, who gradually develops emotions and a sense of self, is both poignant and thought-provoking.