I don't remember what it was, but in the game section in gentoo's portage there was a proggy that did the galaxies in galaxies model of filesystem exploring. You looked at a directory, it had single dots representing files with file names and stuff, you zoom into the dots then they don't get bigger, they just get spread out. The directories are like clusters, at first they appear as dots then you zoom in and they appear as a bunch of dots, then the directory becomes a circle around another bunch of directory "clusters" and file "stars". Every thing is aranged seemingly randomly around you in a complete 3d space, but you can look around yourself up and down left and right, those don't have any meaning, you have complete 360 degrees by 360 degrees of movement, nothing is there check you for up and down, the text revolves it self around your view. At first everything seems random, but it begins to make sense, the arangements are based on the underlining directory structure and the files locations on the harddrive(s). Then you zoom in on another dircetory and another within it and another within that, you continue delving deeper into your directories. At first you felt kinda godlike, sitting at root, seeing your little computer world, but as you go further and futher, you go from universial, to galactic clusters, to galaxies, to solar systems, to planets, to atoms, to subatomic orbits, to past human experiance in your imagination. It's all kinda trippy, but what makes it cool is the symbolic and hard links, which if you follow can take you directly from atom to galaxies, and if your not paying attention you can become disorented quite quickly. Kinda like wormholes or something, but all you are really seing is small dots and yellow and blue lines that are just whizing by. There is not much you can do with that, it seems the author created it as a engine for a file manager, but was hoping someone would pick it up to make it fully functional. I think that with some nice graphics, lines and dots that grow larger as you close in on it and a decent pair of 3d glasses you could get quite immersed in it. Allow better focus, or something like that.
Could you imaging what using a simple text editor could be like? You could be using a command line, say with 3 or four lines of text at the bottom. Say your at root just type in "cd /etc/X11/xinit/".. You slide into into etc galaxy thru X11 and stop at the solar system of xinit. In it you see several planets, you type in "ls -l" and the view whips around to get the best vantage point and then green text materializes into apperiance out of thin air next to the respective. In your chosen theme it tends to puslate a bit and fade out in places like the holograms in Star Wars, but due to the high contrast in of the background it is still easy to read. The green-blue hue of the planet xinitrc.kde indicates that is a text file, and it's faint atmosphere that seems to be sucked to form the planet xinitrc indicates that there is a symbolic link to that file. So you hit "vi xinitrc.kde" and then you zoom into the planet very rapidly the blue/green hue disolves into individual text, once the planet is 3/4 filling up your view it "explodes" from the back of it and the sphere unraps itself into a perfect rectangle to fill up your view as you start to edit it for a simple bash typo. All this happens fast and with seemless smooth movements. This is the background of your desktop and the entire time you have your daytime TV show playing in a box up in the corner.
You could have serveral themes. That could of been the "Star Wars" theme, with computer diagnostics graphs and network indicators running in several gauges around the screen, with the /var/log/messages happily scrolling thru your main display unit. This all gives you the apperiance of being in a TIE fighter cockpit. Or you could have a underwater theme, or a Hell and Damnation themes with the flames that pusate to your Mp3's. Or you could have a forest glenn theme, or a Urban theme, Doom themes, trippy themes, win95(?) themes,Super Mario world with little turltes and umpah shrooms running around with your app's windows on signs while they hop over each other to be infront. whatever.
How about that? You can navigate with the keyboard. Or have you ever played the game "Black and White"? they have a neat solution for the mouse and operating first person in a complete 3-d world...