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My latest project, simian, was presented yesterday. Rather than focusing on rendering bigger datasets, it focuses on making better use of the data and interactivity. The goal was to make volume rendering expressive, intuitive, and efficient. We use higher dimensional transfer functions for better discrimination of data values and material boundaries. We use new interaction modalities to make it easy to specify a transfer function. We also render high quality shaded volumes, and all of this interactively on the latest generation of graphics cards.