Are you trying to engineer us socially?
I'll bite anyway.
- Commodore PET 2001, the original
- Commodore's built-in screen editor
- Commodore BASIC
- I've read books on Lisp, but to say that I've learned it or written a program I would admit exists . . . the counter is still running. Hope springs eternal.
- Common Lisp, but I was reading about Lisp in BYTE magazine before CL existed, in the context of AI. I was also exposed to the work of Terry Winograd, particularly SHRDLU.
- vim, usually without remembering to turn on its fancy features, so it may as well be Bill Joy's vi.
- BASH
- I've been advised to learn Emacs and its Lisp along the way.