Another must-see marvel of horror, comedy, and impeccable filmmaking by the Korean director Bong Joon-ho (The Host), Mother features a dementedly devoted mom (Kim Hye-ja) who will stop at nothing — nothing — to clear murder charges against her mentally challenged adult son (Won Bin) in the gruesome death of a schoolgirl. Some background for relishing Kim's tour de force turn as a monster of maternal love: The star is beloved at home for her portrayals of warm, kind mamas — a Korean Donna Reed.