How Many Programming Languages Have You Used?

I’ve been hearing all the buzz for the last several years over dynamic languages like Ruby and Python. I always like to try the latest and greatest from time to time and sometimes even move myself professionally in that direction. I guess because I started out working primarily with interpreted, weakly typed languages and I’m now horribly spoiled by intellisense, I’m having trouble even taking a look at either Ruby or Python (yes, I know they are *technically* not weakly typed, but the “dynamic” part equates in my feeble mind). I was perusing a list of programming languages trying find an interesting alternative to Ruby or Python to play with, and thought it would be interesting to list the ones that I’ve actually written programs in and what level of experience I have with them.

BASIC — Hobby (Like many others, lowly BASIC got me hooked on programming at an early age)
dBaseIII — Production
Clipper — Production, Commercial
TurboPascal — Academic
DOS Batch — Production
8086 Assembly — Production, Commercial
Modula-2 — Academic
PDP-11 Assembly — Academic
Lisp — Academic
Prolog — Academic
Smalltalk — Academic
Ada — Academic
Actor — Hobby (Am I forgetting the name or how it’s spelled? Can’t find a link.)
C — Academic, Production, Commercial
C++ — Academic, Production
Protel (Nortel proprietary — I actually worked on the DMS 250) — Production
Rexx — Production
Visual Basic — Production
T-SQL — Production
Java — Production
PL-SQL — Production
C# — Production
PHP — Production

One language I left out was the pet project of a professor of mine in college. It was Prolog-like language that he had us implement as our major assingment in compilers class. I actually won a copy of his book (aren’t you jealous :p) for having the best compiler in the class. Unfortunately, I threw the book out a few years ago and I can’t recall the name of the professor or the langauge for the life of me.

So which languages have you used and which ones are you interested in learning?