The Machinist is a psychological thriller film released in 2004, with Christian Bale playing the role of Trevor Reznik, an industrial worker suffering from severe insomnia. Bale's performance in this film is remarkable, as he underwent an extreme physical transformation, losing a significant amount of weight to portray the emaciated and sleep-deprived Reznik. The Machinist is a haunting and atmospheric film that delves into the depths of the human mind, exploring themes of guilt, paranoia, and identity. Bale's dedication to his role and his ability to convey the character's mental and physical deterioration make this film a must-watch for fans of psychological thrillers.