At Graphistry, we are powering nextgen visual analysis through real-time GPU clusters that stream right into your browser. For example, we cracked a botnet a couple days ago using it. Visually exploring millions of data points in real-time is a hard problem for both infoviz design (hairballs!) and high performance programming (1000 node GPU clusters), but unblocks some of the biggest industries (finding criminals, avoiding economic meltdown, datacenter rootcause analysis, ...).

And yes, we're looking for the right data viz folks to help us harness all this performance and help data analysts make sense of it all.