Hey! Thanks for reading! Just a reminder that I wrote this some years ago, and may have much more complicated feelings about this topic than I did when I wrote it. Happy to elaborate, feel free to reach out to me! 😄
Java: I learned to program in this. It led to the creation of the JVM, and while Java isn't my favorite language, the JVM is a pretty sexy piece of technology that enabled a number of other languages (Scala and Clojure most notable) to flourish.
C: The closest thing imperative programming has to "sparse beauty," a la Scheme. Shows you really don't need many bells and whistles to do a job, and do it well.
C++: Back when everyone was using C, it's kind of a technical miracle that Bjarne could create a proper superset on top of C with the features it has. Further, it's still blazing fast; without it we wouldn't have all the video games we love today ^_^.
PHP: Incredibly easy to learn, and no-hassle to set up on a server. One of the matches that lit the web on fire.
Racket (and Scheme applies here too): The language that never lets up. The most delicious learning curve I've ever tasted. Like Wagner's music is jokingly said to be "better than it sounds," Racket is more fun and fulfilling than it deserves to be.
Erlang: Industry-proven functional programming with more concurrency love than 1000 suns. Also the top language for gaining hipster-programmer cred. When you drop this name, suddenly everyone looks at you like "that guy" (you can decide if this is what you want or not).
Haskell: A wolf in sheeps's clothing, the most modern, practical, and supported language with features I think we'll see as necessary in the future. Another candidate for learning curve that keeps on giving.*
SML: A really sick module system for programming in the large. While not my favorite for "programming in the small," an understanding of SML's module system makes you pity that it never really took off.
Ruby: One of the most beautifully designed, fully-realized languages I know. Shows you can make a language that is simple, with practical value for Herp Derp programmers without sacrificing power and flexibility for the craftsmen as well.
Objective-C: The real "C with objects." Message passing with named parameters (and the much more sensible #import rather than #include), this is one time where I'm highly in favor of Mr. Jobs' stubbornness.
Prolog: 10-second youtube video. I mean this in a good way.
Max/MSP: Probably the most fully-realized and pleasing graphical programming environment I know, as well as an example of a damn fine DSL.
Flapjax: Functional reactive programming! An excellent example of functional languages and concepts attacking problems from the language level. Very innovative workaround for the horrors of client-side programming of the time.
Actionscript: Adobe makes it! Like Java, but better (Flash Platform > Swing/most Java GUI's).
*= Small qualification on the learning curve lines: virtually any language takes years of work over dozens of programs to "master." But many times mastering a language means compensating for its weaknesses, not discovering new strengths. That's what Haskell and Racket have given me more than most other languages.
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