Shwup is a new (beta) site for sharing photos/videos. This is done by creating a private album that people can only view through an invitation. Once a person is invited they can then add media to this album via email there is no need to register.
What makes Shwup such a great resource is how easy it is to use and the ability to create a custom slide show called a muvee. This muvee is something similar to what PhotoPeach or Animoto would create.
Give Shwup a try by clicking here.