I remember running X the first time on Linux just after it was reported working because I happened to have the exact chipset that Peter MacDonald supported in my 386 at the time. We ran it off of a boot and root floppy - both 3.5", 1.44MB disks.
We didn't do much with it at the time, but it was a big deal... we had only run X on workstations before that, and they were expensive and few and far between.
That's rich!