Helluu!

I've only just bought a camera a few weeks ago and just fiddling around with it. I notice when I take a photo with a 1/2000 shutter speed or higher in light conditions, the image is well, very dark. I was wondering, why would a camera have such a quick shutter speed if it's useless (to the untrained person).

So my question/request today is:
What examples are there of photographs where you can use such quick shutter speeds?

Thanks,
Jessy/Tehfreak