С would be Latin. You probably don't even imagine how much from their culture does your own culture borrow. It is considered good to know it. Most of the scientific world uses it somehow. They say you can always express any of your thoughts in it, though the language seems to be not very modern. And yeah, when a pro writes something elegant in it, it seems hard to read that aloud and especially to understand.
Pascal would be Ancient Greek. Yeah, some words in any language seem to be somehow borrowed from it... but.. does anyone actually speak it in public? Of course, there is modern version with its own dialects even - after ages of foreign influence and inner transformation - and this is what is spoken in some locations nowadays.
Perl would be French. With a rather exotic vocabulary and grammar, this language is somewhat hard to learn, but beatiful and powerful in nature - yet almost unreadable when someone writes something for you. Sometimes it's hard to even figure out, is the phrase obscene or extremely graceful and beatiful (as there are different points of view). And a mistake might hide in one little letter.
PHP would be German. A straightforward, pragmatic and very spread language, it can be used to both issue primitive commands and build up an abstract philosophic constructions. Its native speakers have almost conquered the world some other day. The guys speaking other languages opposed them that day - that's why we're all safe now :)
Ruby would be English. With a very simple basic grammar and very developed yet pragmatic vocabulary this language is easy to understand from the first days of using it. Today, this one conquers the world - sometimes with and without the direct expansion, creepeing into other countries and transforming minds of speakers in there... Still, it's own environment has got lots of troubles and unclear future.
VB.NET would be Russian. Provided by the hugest country in the world (suspected to be motherland of all evil), it blooms from ancient roots (which are still originating specifically inside that country). Guys from there think their language is beautiful and somewhat elegant. They borrowed half of vocabulary from other lnguages. When .NET-ters try to speak other languages, they just invent their own subset of grammar, vocabulary and common understanding (like C#, JS.NET and so :) ).