DVCreators has put up a half an hour tutorial on Quartz Composer detailing how they have created their introduction graphics:
I’ve always liked the super-dramatic light rays effect, but the light rays filters in Motion and Final Cut Pro take too long to render… and frankly, they are pretty lame. So I’ve been waiting for the right opportunity to help you create those super long, awesome godlike light rays, and preferably in real time! And finally, that opportunity is here.
So if you have some time to burn and have been putting off digging in to one of the nicest DIY visuals environments, head on over to DVCreators.net and get your learn on.