Virtual water that actually looks close to water
Water almost never looks quite like water when it's rendered: there a lot of variables involved with a fluid splashing around, after all. But this virtual water looks pretty great.
The team at PhysXInfo made the software, called Position Based Fluids, that you see here. The simulation is running in real-time on a cheap graphics card, which makes the realistic flow of water impressive on its own. But the real treat is the aquarium-breaking at the end of the video, which must be complicated to simulate. It's enough to get gamers or special effects hounds salivating.
Check out PhysXInfo if you're interested in the technical details.