Linden Lab is launching an interesting new feature in Second Life, allowing prims to be sculpted in organic shapes from a texture, theese textures can be exported from your 3d models in other programs as Maya and 3ds max. This feature will expand the possibilities of design in SL greatly. I am looking forward to try it myself, when it will be implemented in near future.
Sculpted_Prims FAQ on the official wiki
The advent of an illustrious age of sculpted prims!