HPG is a great little conference squarely aimed at interactive rendering techniques, including areas such as hardware and ray tracing. It will be June 25-27 in Paris (France, not Texas), colocated with another excellent gathering of researchers, the Eurographics Symposium on Rendering. See the HPG call for participation and EGSR CFP for more information.

Entirely gratuitous image follows, a voxelized and 3d printed you-know-what (from here):