These videos show some of the particle systems included in the DPSF Demo project, which is included in the DPSF installer. The source code for these particle systems is provided, showing you how these these effects are created using DPSF. You can play around with and change these particle systems as much as you want. Feel free to use any of the particle systems provided by DPSF in your own projects.
These videos show only a small fraction of effects that may be created using DPSF. You can create just about any effect you can imagine using DPSF; If you can code it, you can make it.