Stephanie mentioned a video by Sharon Schamber. She's got a bunch of video's on her new site and although many of them are high speed previews for her classes, you can still pick up some great information. I also ordered a CD from her recently - it's not a demonstration video, more like a book on CD but it had some great background fills I've been playing with. Sharon quilts on a longarm but these background fills could certainly be done on a domestic machine.
Here's the link to the CD Stipple Basics
Here's the link to the videos