Here are some short Videoes. You will need to down load them and play them from Windows Media Player.
The Marble Filter is in development as the moment (27July2011) but the video dose show how to use the HSL Invert ,Shift, Span Filter.
The Celluler Noise Filter is demonstrated, though it can do more than this little video shows.
The Bandpass Filter is also demonstrated in a very short video, it can be used to create Black on White images or for creating masks. and lastly, the Rotate, Resize Reposition and Duplicate Filter is demonstrated, it does nothing that can not be done in other ways, it is ment as a work flow tool, bring together four commonly used tool under one interface where they can be used conjointly.
As always, I hope you find these Videoes helpful