Tito uses Morpher (3) as basic modifier for facial animation, with 17 gestures that can be handled from the different Morpher channels. There're also 3 custom attributes (2) created to animate the rotation of the mandible bone.
Tito's facial animation can be controlled by this combination of Morpher and custom attributes, but also from the parameter collector. You can access this dialog from the menu "Animation>>Parameter Collector". This is one of the new tools that was included in Max 7.