Debugging object-oriented programs requires understanding how objects interact with each other and how their state evolves during execution. It is an arduous activity, as there are no methods to support finding objects to debug and explore their interactions. In this paper we present Scopeo, a novel object-centric approach to explore objects and their interactions in object-oriented programs. We evaluate the performance of Scopeo and conclude its applicability to real debugging scenarios. We then open a discussion on the interest of this approach for future research into debugging and program comprehension.