That is a more tricky question than it seems, at least for me.
Why did i do it?
I had bad font-quality in tty and
after startx, logging out of X again, resolution has changed (it was tiny, barely readable).
What people usually do with it, i think is using quasi-gui apps on tty:
fbi -> image-viewer, comes with a pdf-reader, but i can't find the name right now.
fbterm -> terminal like
directvnc -> VNC
bb -> ASCII-art demo based on AAlib
... etc
On my encrypted installations i run into problems. Some stop booting. Can't figure it out. I need to use a live-CD, cryptsetup luksOpen the partitions, mount them, mount {sys, dev, prog}, chroot, remove v86d, update-initramfs -k all -u. In short: you have been warned.

I am pretty sure that it is only interesting for people who regulary use their systems CLI-only
(on my old PCs the gui can be annoying, say if all i do is a bit of programming training)