Some of these videos are particularly fascinating in how the head position is not exactly replicated but does look more like the body language I'd expect from t

Some of these videos are particularly fascinating in how the head position is not exactly replicated but does look more like the body language I'd expect from those people. Like, try to note the sequence of facial expressions and head angle that Barack Obama goes through, then watch Angela Merkel and Winston Churchill. They're not 1-to-1.