In this tutorial, Aharon Rabinowitz shows you tips and techniques for creating interesting fire and water-based effects with your Artbeats footage.

Projectfile with a default camera, parented to 2 null objects and a master controller

The Difference Matte effect creates a transparency a mask or a matte by comparing the pixels in a source layer with the pixel in a defined difference layer, and then keying out (eliminating) pixels in the source layer that match both the position and color in the difference layer.

From Adobe's LiveDocs:

Super simple script that generates text layers and distributes them in 3D space.

Formatting a number with commas

Apply this expression to your 'Scale' attribute and it'll automatically 'flip' the layer in 3d space when the camera goes behind it. This way, your text will never be seen from behind, for instance.

A preset for AE CS3 that simulates a fuzzy TV picture
incl. project file

Often very useful to wiggle only horizontal or vertical

More experimentation with sampleImage().
from http://www.creative-workflow-hacks.com