Most people still associate comics and graphic books mostly with fiction, although there have been some standout examples of graphic journalistic works (like "Persepolis"). A new one is written by Brooke Gladstone, host of NPR's "On the Media." It's called "The Influencing Machine," and its her take on the many ways that media affect our lives.
Below is a short (about 3 minutes) animation based on one idea in the book. I think it's interesting both for the content and as a great example of a video book promotion. And maybe it could prompt you to wonder, as it did me, whether anything you want to write could best be expressed in this genre...