For the hourglass shot, have you considered stapling the actress to the floor and spinning the room! [img]wink.gif[/img]
Actually, the real limiting factor on that shot will be the hourglass. Because gravity is the way it is, the hourglass will need to remain vertical the entire time in order for the sand to keep flowing, right? Any chance you could blue-screen the hourglass and composite it in post? I can't think of another way to do it without distorting the laws of physics, physically spinning the room, or resorting to CGI.
As for rotating the camera... here's a wacky idea, but it might help to get you started on a better solution.
Cut the bottom off of a sturdy bucket and use odds-and-ends from the local hardware store to mount the camera inside the bucket. Your local paint store might have a bucket that fits the bill. Have four friends with bicycles stop by the day of the shoot. Flip the bikes over so they're upside down... two to the left of the camera-bucket and two to the right. Rest your camera-bucket in the cradle created by the four rear tires of the bicycles. Have one of your grips work the pedals of one of the bikes with one hand and the rear brake with the other. To prevent the camera from spinning past the mark, you could use a piece of string. Stand on one end and have the other attached to the bucket. When the string is taught, the bucket will stop, and which point your grip will need to pull the brake to prevent the camera-bucket from bouncing around.
All of the other ideas I have come up with are variations on this that require advanced welding and carpentry skills that would probobly be better suited for a different forum. Anyway, I hope this helps to get you started.
One request though... bookmark this thread and post a follow-up after the shoot. I'd love to hear how you eventually solved this one.
Good luck!
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