Herbert Simon´s (1967) early speculations about emotion and goal selection have inspired several lines of research into the role of emotion in information processing. In this paper we review emotion research that has been directly and indirectly inspired by Simon´s model of emotion as a goal interruption mechanism. One particularly promising approach to the study of emotion and goal regulation focuses on Simon´s (1967) view of emotions as quick and ready goal-selection mechanisms. The implication of this approach for our understanding of mood, affect, and emotion are discussed.