And here is another open List. From where in the internet do you get content?
Here are a few:
www.showfootage.com
www.gettyimages.com
www.fotosearch.com
www.dreamstime.com
www.digitalblasphemy.com
www.fotolia.com
Please do not make me responsible for the content on these links. Just suggestions....
And please be always sure to use only content you are allowed to use!