SKYLAB : SPACE STATION I - 1970's NASA Space Station Educational Documentary
full link: http://www.youtube.com/watch?v=xJb2yjtDYaY
Check out the special effects at 16:36 or so. The astronauts can run in circles like in the scene from the film 2001: A Space Odyssey. How is this possible? It is not. There is no force that pushes the astronaut back towards the apparent floor after his foot and pushed away from that surface. The other odd thing is how after a time, they are then unable to run on the surface and instead float as expected. This would then be some kind of composite with wire work and perhaps put together with the multiplane camera system. Some kind of camera rig and/or wire set up would be used to shoot the footage of the actors.