Answer
In the 2013 science fiction film "The Zero Theorem," Waltz portrays Qohen Leth, a reclusive computer genius recruited by Management to decipher the cryptic Zero Theorem, believed to hold the key to the meaning of existence. Amidst a dystopian backdrop and a quest for purpose, Waltz's character becomes entangled in a labyrinth of philosophical contemplations, technological complexities, and existential quandaries.