Cardiac electrophysiologists face many challenging situations in which there is no clear-cut answer about the best way to handle a particular clinical problem. This issue brings together articles on many such situations, presents arguments on both sides, and lets the reader conclude which is the best way to manage a particular patient. Among the controversial and debatable topics included are how to handle device recalls, optimal timing for assessment of ICD efficacy, extraction o f broken leads, and anticoagulation therapy in device patients.