When my husband was teaching what essentially translated to American Government 101, his cirriculum called for the kids to turn in a research paper right about the same time as the midterm exams, and another about the same time as the final. He'd make his exams multiple choice and make up a master so that I could grade the exams while he graded the research papers. He'd provide extra credit questions such as "Who is the Vice President of the United States" or "Who is the Speaker of the House" and at least one of the four options he provided would be a fictional charactor or a non-political celebrity, thus giving them essentially a one in three chance to get it right even if they guessed.
It used to frighten me how many of the college kids got these questions wrong. It still does, but now that he's teaching a different course where the exams do not lend themselves to multiple choice questions, I can pretend I don't know about it.