Having Guest Speakers relating to and pertaining to the course of study seem to break the day to day same 'ol same 'ol of the classroom setting. In my opinion, this allows the student to ask questions of the Speaker who relates directly to the subject matter. I teach Professional Development; we had a representative from a local Online Job Listing/Posting organization. The speaker was able to answer, and ease fears of the high school age student up to the nontraditional student, regarding Resume Writing, Interviewing, and the Job Search from a Professional perspective.