Stock Footage for Free is a great place to find free stock footage for your videos.  I came across this website while looking for royalty free stock footage that also cost nothing to download.  It has a lot of great footage from around the world in both standard and high definition.  They let you use their footage in all of your projects including commercial projects.  The best part is that there are absolutely no fees, or catches.

Don’t forget, there are also a lot of good sites for free stock images.