I have long been a fan of News of the Weird. Not only is it humorous, it can be used as a great teaching tool. I wrote a lesson plan on this years ago titled Using Weird News to Teach About Verifying Information on the Web.
For the last year, I have been following the almost daily blog of News of the Weird which was at a Blogger blogspot address. Last week, the author discontinued that site to create a new one. It is Weird Universe. Several people into collecting weird and strange news have come together to create on terrific blog. Go ahead and check it out. I promise you will find items to help you in teaching critical thinking at the library!
From the site:
Weird Universe explores every aspect of a human and natural cosmos that is not only "stranger than we imagine, but stranger than we can imagine."