This paper by Krishnan et al. demonstrates a large class of non-parametric statistical analysis problems that can be solved using the graphics hardware. It shows how to do duality transforms and operations in primal and dual geometric planes in a robust way using the graphics pipeline. (Hardware-Assisted Computation of Depth Contours. S. Krishnan, N. Mustafa and S. Venkatasubramanian. 13th ACM-SIAM Symposium on Discrete Algorithms).