Case material is presented from three analyses in which dramatic, unexpected movements by patients on the couch dominated the analytic hours for long periods of time. The psychoanalytic literature pertinent to this area of acting in is reviewed, and some formulations regarding the shift from verbalization to motor behavior are presented. These center on the proposition that the patients had identified with aggressor parents who regarded actions, not words, as the ultimate conveyers of reality. The analyst's use of countertransference responses as clues to the understanding of the actions is discussed.