I had a friend recently point me to the very cool resources for precreated code, audio, themes, and video from Envato, and in particular Envato's http://videohive.net which has precreated video clips and animations for use in video projects for (I am told) mostly Adobe After Effects. Are there any resources like http://videohive.net for Sony Vegas that you all know of?

And on a different, but related note, where can I find video effect plugins for Sony Vegas itself to extend is capabilities? I currently only have Movie Studio but am thinking of getting Pro if I can do what I want with Vegas instead of After Effects. Thanks for your input!