I like to throw goofy extra credit questions on my exams. Usually they will draw on something I've said in class that students probably didn't write down, but was just goofy enough that it might have clung to their brains. For example, President Polk once had gall bladder surgery without anesthesia. Just for variety, I might add a university question, such as the name of the Dean of Students or that year's commencement speaker. My favorite question thus far? "The 'W' in George W. Bushis name is short for --?"
Few very students know the answer, but I do get some hilarious guesses.
Ralph (his real name) is proving very elusive as a research topic
Words Written: lots of books thrown around the room
Lessons Graded: fifteen