When playing as the commander of the AAF Strider (any variant), pressing the Head Roll Left/Right view controls makes the entire vehicle appear to roll relative to the background scenery outside the vehicle, rather than just the head of the commander inside the vehicle.
Other positions in the Strider such as driver, gunner or passenger seats do not experience the same effect, nor do other vehicles that I have tried - i.e. the view LOD remains parallel to the surface it is parked on in other instances.
Video: http://www.youtube.com/watch?v=5xh21ZfYGYs {F21345}