I just came across this video that I watched quite a while ago. It's a humorous take on the very serious problem of PowerPoint misuse. I like it because, personally, I am so passionate about the need to rethink slides that I think others may be taken aback at first.
Humor helps people relax. They become less defensive and allow themselves to be a little more vulnerable. This, in turn, helps them to be more open to change.
Watch the video and see how easy it is to agree with Don.
According to Don McMillan, here is a humorous & yet insightful viewpoint on how people (teachers included) should not be using PowerPoint.