This reminds me of my occasional habit of watching movies with the sound off. When you watch a movie with no sound, you can get a great sense for how well the a

This reminds me of my occasional habit of watching movies with the sound off. When you watch a movie with no sound, you can get a great sense for how well the actor is "selling" the role based on their facial expressions and body language. Without the distraction of the soundtrack and dialogue (often dubbed in later) you are left with a raw performance and get a great sense for how well the actor is doing.