From Ripple Training:

Learn how to create animated “highlight” graphics that call attention to an otherwise busy frame. This is great technique to use whenever you want to focus your audience on some text in a document, a location on a map or a specific person in a group photo (to name a few).

You can view the entire video tutorial here.

From Ripple Training:

Learn how to call attention to an individual in a photograph, illuminate text in a book, or emphasize an item on the screen for a training demo.

Watch the video tutorial here.

From Ripple Training comes this handy tip:

Using the Boris 3D text generator, a Highlight generator, and a few composite modes for flavor, you can make an exciting animated light pass over your FCP titles.

Watch the video tutorial here.