Sitting in a room full of strangers

Well the title is pretty self explanatory. I am actually doing this now. Seeing people and attitudes I've never met, okay well attitudes not really but there are so many people in this world. It's insane! I like to sit and watch them make conversation and their expressions. The art of acting, coming from different personas and faces different ways to express the exact same thing. It's amazing. All in less than 5 minutes you can probably see about 20 different facial expressions. You should try this. Makes you think, what kind of faces do you make?