Games games games. You've probably seen some of them before. But they're all based on good physics.
Imagining the Tenth Dimension (Flash). 10th dimensional physics and string theory don't get any easier than this.
Vortical interfaces between immiscible fluids - a slow-motion video of various vortexes of Newtonian and non-Newtonian fluids, set to Soundgarden's Black Hole Sun, with explanatory captions. Pleasing to the eyes.