Originate is a script for After Effects that keys layers in and out of frame radially. We've used this technique for logo reveals and other items that needed to have parts fly in from out of frame and assemble in the middle of the comp. This script has saved us some time. This also works well with our Radial Delay script. Originate is great for quickly animating grids of logos, background animation, etc.
This download comes with the script and a user guide.