We have a beta site for viewing stereoscopic 3D panoramas here; http://www.3d-360.com/
One panorama is 18 billion pixels and all of the others panoramas are all over a hundred million pixels. Many others have been created but not posted because this is just our beta testing of the viewing process. This should work well with the Oculus as it already works with 3DHDTVs.
We have a variety of viewing modes including half height and half width over under and side by side. We use the mouse to control scrolling and our very deep zoom. I can see where turning the head to change the view is a natural. Maybe one just uses a wireless mouse wheel to control the zoom.
Anyhow, please give it a try if you are able and interested. The notion is that one could take virtual tours of a 3D-360 world. Let us know what you think and guide us if we are almost there.