I'm sure Nintendo did a tech demo of Mario walking around a sphere way before Mario Sunshine was first shown, can't seem to find it though.Insomniac got served HARD!
at Miyamoto-sama.
Yeah. I think Galaxy's director even said that it was an idea he had been toying with since before the release of Sunshine.
Right, as if you could find such things on the internet... unless they WANT us to see it.