Check out this site, it's about programing languages. Almost all of them are listed. Some are really amazing, check the one called brainf*ck! For each language a helloworld source is provided.
http://www2.latech.edu/~acm/HelloWorld.shtml

enjoy!
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David Clesse Belgium/Lux [blue]Mk2[/blue]-36g-tuner-stick-aug00 [orange]Riocar[/orange]-60g-jan02