The author describes the workshop he presented at Desert Vista Campus of the Pima Community College System on the use of case studies in science. During the workshop the participants developed their own cases and presented their cases to a group of students that were hired to act as expert critics. The faculty, usually in pairs, presented their cases to the students as if it were their own class. When each case was over, the students wrote comments about the efficacy of the case and offered suggestions. Three of the cleverest approaches to case study teaching--first-person oral narratives; expert witnesses; and intimate debate--are described.