Agile retrospectives are something that all agile teams are by now familiar with, to one extent or another. Retros are built into the manifesto in Principle 12; At regular intervals, the team reflects on how to become more effective, then tunes and adjusts its behaviour accordingly. Retros were built into frameworks such as eXtreme Programming and Scrum, and have now become a staple of the cadence we expect to see in any kind of agile team. Given their high significance in our processes, and being process managers, retrospectives should be of the highest priority to ScrumMasters.