The Big Lebowski is a strong option for learners who already feel comfortable with English and want a more demanding challenge. Some scenes use denser language, so learners may need to pay close attention to word choice and phrasing. Also, jokes, quick reactions and casual exchanges are a regular part of the dialogue. At an average of around 90 words per minute, the dialogue is generally manageable, though some exchanges require more attention. The story gives enough context to follow what is happening easily. If your English is close to B1/B2, The Big Lebowski can be useful for building vocabulary range.