Alien Skin through their Snap Art product has a number of filters that you can apply in say photoshop. I have a set that I posted up on Flickr. part of the set I took a photo I had of Sleeping Beauty Castle and added each filter with the default settings. They have some really good stuff!
Picture sets:
http://www.flickr.com/photos/frikiti...7602521070239/
Here's the software:
http://www.alienskin.com/snapart/index.aspx