Odd, because the first thing I thought of when I saw that was the famous scene from Jurassic Park where Lex is navigating a UNIX file system using a 3D Visualiser ;-) I was much amused when the scoffers were trumped by the revelation that the Visualiser in question was a 100% genuine utility of the correct vintage. I just wish I could recall what it was called now...Wikipedia is not helping, there's too much information!