If you have an AE project with so many Compositions, which have so many layers in them, and you have used Generate->Fill Effect for some or many layers of your project.

DuIK Tools is a revolutionary Inverse Kinematics script for After Effects developed by Nicolas Dufresne a.k.a DuDuf which brings the principles behind 3D rigging to After Effects, giving greater precision and faster, more lifelike animations!

A quick method to set an outline/stroke based on the original shape of a layer.(Preset)

sParticular is a script that helps you with 3D integration when using Trapcode Particular.

Earthquake effects on fullscreen video clips

This tutorial explores how to set up an external text document to drive content for items like lower thirds and interstitials.
http://www.graymachine.com

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.