Rear Window is a strong option for learners who already feel comfortable with English and want a more demanding challenge. Learners will hear plenty of useful natural English, but some lines may still require a second listen. With the dialogue moving at a natural rhythm, viewers should catch most of it, although a few moments may still be challenging. Because the plot is fairly straightforward, learners can focus more on the dialogue than on figuring out the story. If your English is close to B1/B2, Rear Window can be useful for building listening confidence.