Is there GIS Video "that Mom can understand"?
I love the Geospatial Revolution series of videos from Penn State University.
It's a beautifully produced set of videos showcasing some everyday uses of GIS.
What is GIS by ESRI: Short and informative, with understandable images and use cases, and a groovy introduction music. Otherwise, just say: "GIS technology is kind of like Google Earth, but beeetter".