Examples
Nod single man.mov
Nod repeated woman.mov
A single nod (man on the left)
A repeated nod (woman on the right)
Tilt man.mov
Turn woman.mov
A tilt (man on the left)
A side turn (woman on the right)
A single nod (man on the left)
A repeated nod (woman on the right)
A tilt (man on the left)
A side turn (woman on the right)