There’s a natural abundance of web video contests – most of them are limited to US legal citizens, but a couple of them are open to all over a certain age (usually 18).
Take a look at the current video contests on the web in the Video Contest Calendar, and pick the one that suits your style and fires your inspiration. Prizes are great (up to $25,000), but entering a video contest in itself is simply a great learning experience and fun!
Video Contests that Rock 