I use this PowerPoint in my high school psychology class to talk about our brain's limitations when it comes to our consciousness and attention. It discusses humans' general inability to multi-task. It also talks about change blindness and includes 4 different video clips that show experiments done on change blindness (our brain's inability to notice many changes that occur around us when we are focused on something else). My students are always completely fascinated by this.
It ends with instructions for conducting their own experiments (either in multi-tasking or change blindness). They have a lot of fun with this and it always ends up being one of their favorite lessons of the year. Enjoy!