Visible crew/equipment: When the astronauts are approaching the monolith on the moon, you can see the reflection of the cameraman in the visor of the first astronaut off the ramp, in the close up of him walking around the monolith. This shot was personally filmed by Stanley Kubrick and the reflection is his own. (00:48:40)
Visible crew/equipment: When David walks with the case in the hand inside the Discovery One, you can see the dolly track below at David's feet blending in the structure. (01:12:12)
Visible crew/equipment: During one of the scenes where an astronaut does an EVA (Extra Vehicular Activity or "Space Walk"), you see him floating slowly from the Pod shuttle towards the Discovery. This was filmed by hanging the pod on the ceiling and lowering the actor from it with a rope towards the camera that's pointing upward. If you look carefully, you can see the shadow of the rope.
Visible crew/equipment: In both EVA scenes, first when Dave retrieves the AE-35 Unit, and when Frank goes to re-install it, there are shots of Discovery in the background, the pod in the foreground and the astronaut floating between. And in both of these shots, the pod rotates 180 degrees. In the front window of the pod, we can see reflected images of the film set and equipment as the pod rotates.
Suggested correction: The shuttle lands "on its back" with legs extending beyond the engines. As in most traditional sci-fi, and ALL actual, space flights to date, the launch (and landing) orientation for humans is to be on one's back. This minimizes blood being sucked down to your feet if you were sitting upright at launch - you could pass out. So we see this when the shuttle lands on the moon - the cockpit (red window) faces up (pilots on their backs, facing out the window). When we presume that the passenger cabin was 180 degrees spun around from the cockpit seating, they're still on their backs. Any loose objects would have been stowed before landing - the airlines don't lock down your bags, newspapers and coffee cups, right? They're loose in the cabin during flight, but put away on takeoff and landing.
Airliners do not fly upside down. The Orion shuttle cannot possibly operate the way it does if it lands in a gravity environment - some rooms are upside down relative to others - why else would the stewardess do the 180 degree vertical walk? It is an idiotic design flaw, and the posting is 100% correct.
The Aries passengers sit and stand with their feet down towards the moon. The pilots sit with their back down to the moon, as conventional astronauts do on Earth. But the attendant's 180-degree walk is completely wrong to the orientation of the shuttle's interior: it should have been only 90° if you look at the Aries exterior. One assumes that Kubrick preferred a longer, more cinematic shot, over a technically accurate shot. But nobody was upside-down to the moon.