I recently downloaded the unity program and went onto youtube to watch some tutorials and found that im missing the camera controls part of the components menu along with a few other things. It goes as low as scripts and then that just leads to terrain. Im not sure if this is a problem with the installer or if i need a patch from somewhere but it seems as though its 'just there' with other peoples version.
Import the standard scripts package (Unity 3) or standard assets (Unity 2.6).