Sure, you can use Motion or After Effects to do compositing work, but when you want a quick and easy solution, you can do a lot of compositing in Final Cut using masks and mattes. Talented Pixie has this video tutorial on how to do some more complicated compositing.

Watch the video tutorial here.

From Creative Cow-

In this tutorial, we’ll like to welcome RunawayTraining.com’s Steve Miller who joins the Cow team and offers this tutorial for Final Cut Pro users who want to know how those TV commercials and music videos make their footage look like there is a malfunctioning projector running amuck, serving up the footage with the kind of jitter and jump that was once so common in the silent movie era. This tutorial uses only the stock plug-ins that come in the box with Final Cut Pro HD.

Read the tutorial here.

Here’s a handy little tip that will help you composite without having to leave Final Cut. With this tip from Ko Maruyama, you’ll be able to pull off some pretty complicated looking effects with no sweat.

Watch the video tutorial here.