I'm not interested in any of that. It's the faces that do it for me. Faces pointing in the direction of the box. Like, if there's a comedy show on the TV and they're laughing, their faces are so happy and free. And most importantly genuine.
Authenticity is vital.
I laugh with them. Or a weepy. Weepies are excellent, because Kevin always cries. He sneaks these little glances at Justine to make sure she hasn't noticed, and she always pretends not to. Boredom's the real killer.