Paul Brugger, a scheduling consultant in South Jordan, Utah, got so frustrated a few years ago trying to work with massive schedules and enormous Gantt charts that he set out to build a better set of tools for comprehending them. The result is a software viewer that extracts data from popular scheduling programs and displays it as navigable 3D models.
VisiSched 3D is available in versions that work with Microsoft Project, Primavera Project Planner and Primavera/Oracle P6. Brugger claims zooming around a schedule in a 3D world gives you insight and awareness that never can be reached by reading a 100-page Gantt chart.