Movement variability in the golf swing has recently been identified as a priority for future research in golf science. Although this ubiquitous aspect of golf performance has featured in previous empirical investigations of the golf swing, it has tended to be subordinate and studied as an adjunct to other more conventional research questions. Furthermore, it has been interpreted largely within an information-processing theoretical framework. The recent application of concepts and tools from dynamical systems theory to analyses of human movement, however, has prompted golf scientists to pay much closer attention to this omnipresent feature of the golf swing. In this paper the author briefly comments on the main issues arising from these studies and highlights some more general topics requiring attention in this important area of study. (Contains 3 notes.)