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

This expression maintains the objects apparent size as it moves away from camera.
It's helpful for taking a flat layout and making a "multiplane" layout from it for animation.

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.

This will make your layer/object bounce along an imaginary 'floor'. Paste it into the 'position' attribute for your layer.

Apply this expression to the opacity attribute and it'll disappear whenever it's flipped away from the camera. You need to have an active camera in your composition for this one to work.

From Adobe's LiveDocs

In this video tutorial, Creative Cow Leader Aharon Rabinowitz shows you how to simulate airflow over an object by using the After Effects CS3 puppet tools with a particle system.

Good to be placed over an existing sun...