It's the only modelling app I enjoy using. Most people disregard it because it's a nurbs modeller, but any model that I do starts off life in Rhino - then get's exported as .3DS for texturing etc.
You should definately try the demo.
It's a fairly technical interface, but technical in the engineering sense, not complicated like Max. If you like 2D CAD programs like Autocad or TurboCAD you'll be right at home. All the tools are laid out logically, you can easily scroll and zoom at any time (like while drawing a polyline for extruding). For instance, if you have an image that you want to trace around (like maybe a gun) - you can do that in Rhino in seconds.
Nurbs are sorta like the 3D equivalent of beziers, so instead of your object being made from polygons, it's a solid shape that you can mould more realistically. Nurbs are great for designers because they can take the shape they have in their heads and basically throw it together in Rhino without worrying about polygons. The Green Goblin from the Spiderman movie was made in Rhino - it's quite a pro package.
Nurbs are not important though - you never used a nurbs object in a game model, you'd convert it to a polygon mesh. I often extrude closed lines into shapes then do all mannor of nurbs operations on them before converting into a mesh for vertice editing.
Van-B
The nature of Monkey was irrepressible!.
