This generates perfect circular motion centered around the original position of the layer.

This expression will allow you to zoom a camera in After Effects using real-world focal length values.

This is a variation on the pendulum expression.

Keyframes were applied to Jack's position at frames 0 and 1 to move him out of the box

This is an expression you can use to generate a decaying pendulum motion.
by Dan Ebbert

Creates an oscillating motion between two specified values over a specified period of time
(in seconds).

Creates an oscillating motion between two specified 2-dimensional positions over a specified
period of time (in seconds).

Zorro makes selection and isolation sets easy and possible in after effects by adding tags to layers. Similar to the way you would tag photos in Flickr, you can tag layers in your comps and then select or isolate those layers in groups by using the tags.

Interactively control camera focus distance.
The camera will focus wherever your null or solid happens to sit. This expression is golden when you're doing a lot of Depth of Field work.

A simple, elegant, telecine-style color-correction tool for coloring or grading your movie.