kallog: "rather you'd feel the room was moving around you"

Yes, that's commonly known as 'the morning after syndrome' smile . - or you could achieve a similar effect by reading through this:

http://www-history.mcs.st-and.ac.uk/HistTopics/Newton_bucket.html

But seriously, yes, acceleration applies to any object moving at non-constant velocity - which includes all things in a gravitational field, so that's just about everything I suppose. Which is why I find the 'Newton's Bucket' so interesting. Mach's ideas on rotational acceleration (taken up by Einstein as 'Mach's principle') are also worth a bit of thought.

"In 1985 further progress by H Pfister and K Braun showed that sufficient centrifugal forces would be induced at the centre of the hollow massive sphere to cause water to form a concave surface in a bucket which is not rotating with respect to the distant stars. Here at last was a form of the symmetry that Mach was seeking."

Weird, innit. And dead fascinating.

"Time is what prevents everything from happening at once" - John Wheeler