ouf, I did quite a lot in many languages, and I tried quite a few, without creating anything significant with them. But well, here we go, in chronological order. I will only list programming languages, not markup languages or styling languages or config languages or query languages, etc. I will mark languages I actively use in bold
Stuff which is on my I-wish-I-had-time-to-learn-and-use-list:
My favorite languages would be: