Set your GPU on fire with NenaMark, an OpenGL ES 2.0 benchmark!
NenaMark is a benchmark/demo of OpenGL ES 2.0, using programmable shaders for graphical effects such as reflections, dynamic shadows, parametric surfaces, particles and different light models to push the GPU to its limits.
Enjoy!
Note that high-end devices are better served by NenaMark2 as they tend to hit the framerate limit (~60 fps) with NenaMark1.