This is one of over 4598 effects generated by Filter Forge, a Photoshop plugin that allows you to create your own filters.
To open this filter, you must have Filter Forge 1.0 or higher installed on your computer. If you don't have it installed yet, click here to download Filter Forge
This filter takes your photo and stacks them perspectivly and then aloows you to place them to the side of the original if you choose
perspective skew photo stack stacker