Procedurally rendered trees?Infinite texture variety with true random patterns. Also not just textures but also geometry so stuff like rock/tree formations don't have to be modeled by hand. I guess all naturally occurring formations benefit from procedural stuff. Stuff like cracks or holes can be procedurally generated too.
Also particle effects and fluids can be procedurally generated instead of prebaked fire animations/smoke etc.
http://software.intel.com/en-us/art...-accurately-model-procedurally-spreading-fire
http://software.intel.com/en-us/articles/procedural-trees-and-procedural-fire-in-a-virtual-world
http://developer.download.nvidia.com/SDK/10.5/direct3d/Source/Smoke/doc/Smoke.wmv
http://developer.download.nvidia.co...rc/SnowAccumulation/Docs/SnowAccumulation.pdf
http://developer.download.nvidia.com/SDK/10.5/direct3d/Source/PerlinFire/doc/PerlinFire.pdf
http://www.familyfriendlygaming.com...orsport 5 E3 2013/Forza5_E3_Screenshot_12.jpg
Or a bullshot?
Or both?