Answer
**Inglourious Basterds**, a 2009 Quentin Tarantino war film, earned Christoph Waltz his first Oscar. Waltz's portrayal of SS Colonel Hans Landa, a multilingual Nazi officer nicknamed "The Jew Hunter," impressed critics and audiences alike, garnering widespread acclaim and numerous accolades, including the Academy Award for Best Supporting Actor. Waltz's charismatic performance, combining menace and charm, brought depth and complexity to the character, enhancing the overall narrative of the film.