Final answer:
WALL-E is the 2008 winner of the "Best Animated Feature" Oscar and didn't have any dialogue until the introduction of the title character's love interest. The lack of dialogue in the beginning of the movie helps to create a sense of solitude and isolation for WALL-E.
Step-by-step explanation:
The movie that won the 2008 "Best Animated Feature" Oscar and didn't have any dialogue until the introduction of the title character's love interest 20 minutes into the movie is WALL-E.
WALL-E is a Pixar animated film that tells the story of a robot named WALL-E who is left on Earth to clean up the planet after humanity has abandoned it. The lack of dialogue in the beginning of the movie helps to create a sense of solitude and isolation for the main character.