Answer
**Answer: Paju** Lee Kang-sheng won the Best Actor award at the 12th Las Palmas de Gran Canaria International Film Festival in 2009 for his performance in the film "Paju". The film, directed by Park Chan-wook, tells the story of a group of friends whose lives are intertwined in the city of Paju, South Korea. The film explores themes of violence, friendship, and the search for meaning in life.