Python (the language).

My first love was Atari BASIC. My second love was Perl. Along the way I learned Pascal, Java, C, and a few other languages.

But Python? That's when everything started clicking. Object Oriented Programming, Functional Programming; it all started to make sense to me with Python.

Sure it's not the fastest, and I've run into more type-checking errors than you can shake a stick at. But I still love it.