One of my first job out of school was as a sales support for the then bleeding edge NT 3.1 MIPS box for a company in Canada. Fond memories of loading stacks of 1.44 floppy disks for NT 3.1 and mangling ARC paths (Advanced RISC Computing, boot firmware). This was pre-internet and documentation was often hard to come by, incomplete etc.
I remember demoing the machines to astonished clients by running a stupid number of Clock apps on the desktop without a hitch.
Fun times.