I don't count LOGO because I didn't learn how to really program the turtle. I really started learning to program in AP Computer Science in my senior year of high school. The curriculum used C++. That's what I used when I started college then moved to Java. While in school I picked up perl, C, Haskell, some Lisp, some of a few ASMs, and probably some others. Afterwards at my first job I learned more C, a lot more perl, shell, Fortran, JavaScript, and maybe others. Now I'm mostly working in Java. Along the way I've seen some python and ruby, learned Objective-C, and may have dabbled in or researched a number of others I'm forgetting. Figuring out a new language is pretty enjoyable if you have some decent code to read.
-Lee