A system (and corresponding method) that enables automatic (and/or manual) summarization of significant events that occur within a collaborative discussion is provided. The summarization promotes efficient review and asynchronous participation where a user can trigger playback of a series of events that occurred within a discussion. The system can automatically summarize ‘high points’ or significant events from within an immersive collaborative environment. ‘World-marks’ or other tags can be employed to mark, locate and/or render the summarized content.