This script creates a new camera and sets point of interest, position and orientation keyframes so that the camera successively faces each comp layer.

Learn how to create a flying, 3D image gallery, using any collection of images you want.

This tutorial shows how to fly a camera around in After Effects and land on full frame video

Learn how to create and animate realistic missile trails through 3D clouds using only After Effects and Particular

Create a futuristic sniper scope using After Effects expressions and null object animation.

A practical application of a layer space transform.
Not very new, but still very useful.
by Dan Ebberts's resource for After Effects scripting and expressions

Add camera shake to your footage with slider controls.
Easily change speed, intensity and rotation.

Motion designer Harry Frank demonstrates how to get around the particle orientation limitation in Trapcode Particular wherein particles always face the camera.

This is a fairly simple technique often done poorly. The trick to making the 3D extrusion look as good as possible is in the way you use a custom shape layer and the way you assign textures to the extrusion.

Earthquake effects on fullscreen video clips