Cup stacking has become commonplace in today's physical education nomenclature. Proponents make claims that cup stacking improves cognitive, affective, and psychomotor abilities. At physical education conferences, scores of professional physical educators eagerly watch cup stacking representatives construct and deconstruct a variety of pyramids and shapes using those colorful, plastic cups. What has made cup stacking so popular? Does it actually accomplish what its proponents claim? What role, if any, does cup stacking have in a quality physical education curriculum? These are but a few of the questions the authors explore concerning this unique yet controversial sport.