I posted a collection of curriculum materials to a new website. It includes quick lessons on skepticism and critical thinking. Many of these short classroom exercises were based on "news items" this past semester. Here's a list of the lessons.
Three-color Mind Control
Dead Psychic's Sketch of John Mark Karr
Chicago's Most Haunted
Columbia Explosion Photos
Angel at the State Fair
The curriculum links go to Word documents and PDFs, interactive QuickTime and Keyonte files, and links to offsite articles or video clips. At this point, I do not have any of the presentations available as PowerPoint files, because I really don't use PowerPoint. The interactive QuickTime files run as standard presentations, and QuickTime is a free download for Mac OS and Windows.
UPDATE: I posted PowerPoint versions of the presentations--I think! A Windows user will have to verify and let me know.