Specific Examples:

00:01 - Background Tracking and Optical FX
00:18 - Zip pans and more stylized background FX
01:00 - 3D sculpted maquette for 2D animation reference
01:25 - Stylized compositing of Live-Action and 2D animation

Zip Pan Breakdown:

Mr. Business Animated Short:

2D Animation Reel:

The Making of Dissection of a Rose:

The Making of Kaleidoscope: