As Google takes over the world and acquires more and more sections of the internet. Using more and more media will reap huge rewards.
So if you've got video footage, get it on YouTube and tag it up properly. If you've pictures make sure they have targeted alt tags. If you've got a book out make sure Google knows about that too.
The more you have indexed the better, as Google begins to bring all it assets together and shows them in the search results.