Here Be Dragons: An Introduction to Critical Thinking
Even those of us who have managed to divest ourselves of religion are not automatically immune to all forms of psychological trickery. This is an important point to remember, and it is very valuable to learn how to spot pseudoscience, logical fallacies and all manner of cons.
Although this is not something you can master in 40 minutes, the 40 minute movie “Here Be Dragons” is a good introduction to some of these issues. It may be too basic for some, but if you don’t already know the material it covers then it’s very much worth watching, and even if you think you know it, a fun little refresher course can’t hurt!