h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

If you're running some version of Unix, get xscreensaver from [URL removed by moderator] as it has a brilliant hypercube module (moving 2D projection). It also has a module called hyperball, which it says is the 4D analog to the dodecahedron, although it's a bit less clear (lines everywhere; the horror!).

Hmmm. The URL has gone now, of course. So perhaps you can include it on your Personal space. Drop a line to the author of "tesseracts" (I am only your humble editor) to let him know where he can find it, and maybe he will include it in his unedited version. Provided, of course, that he is still around. Failing that - put a link on your home space to the Tesseracts Entry and your Screen saver link right next to it.

Now that they've stopped automatically moderating out foreign URLs, here it is again:

http://www.jwz.org/xscreensaver/