Holy shit worth stuff:

Doom, (and Legacy)

Javascript

Internet,

my first "holy shit" moment, on the web, was getting back an email from a programmer in India, (me being in Colombia, thats quite far away), we never talked back, but, to me, it was a mind opening moment, also the USENET, same feeling, lots of more flames.

Turbo C's BGI

FL Studio 4 (google for it, youll be amazed)

Xpath

well, by now, maybe you know what i do for a living.....