This special issue of Kinesiology Review celebrates the 40th anniversary of the publication of George Brooks’s Perspectives on the Academic Discipline of Physical Education: A Tribute to G. Lawrence Rarick (1981). Written by many of the luminaries within kinesiology, the papers in this special issue highlight the tremendous growth of knowledge that has occurred in the subdisciplines of kinesiology over the last 40 years and the breadth of contexts in which new knowledge is now being applied. Kinesiology has rapidly become an influential discipline, and its breadth, depth, and influence continue to grow. Though not without challenges, there is much to be optimistic about concerning kinesiology’s future.