Let me tell you a little secret. Well, not a very big secret but if you are familiar with video and audio stock then it will be new for you.
Many of the guru’s, and even little guys like me, go to these two sites to get their video and audio stock. There is some excellent stuff here, at very reasonable prices. For example, the first video clip of the Prelaunch Video of Dominating Video came from here, as well as all the audio clips.
Revostock is also a great resource for After Effects video stock