There's usually captioning, so that helps, and even if you don't catch every word, for political junkies, half the fun is watching the body language and face reactions, etc.

Does the Speaker of the House (if of an opposing party to POTUS) react to more partisan speech points, since they are seated right by him prominently on camera? Do they grimace? Do they purposely look bored? etc.

Does the peanut gallery of rank and file members of Congress boo anyone? Do they stand for more compelling points, or just clap politely?