This tutorial walks through the set up of a "rig" that uses images to drive the value of shape keys. This allows you to easily choose your character's expression from an intuitive visual menu and all you need to do is create shape keys for your character. No rigging required!
00:00 Introduction
01:13 Creating character shape keys
05:02 Setting up the Images and Selector
09:55 Drivers Explanation
11:01 Setting up the Drivers
13:36 Animating