These are links to various add-ons using highlight.js made by other people that I know of. If you notice that a link doesn't contain what it says — please write me about it. And if you want to ask something about certain add-on it's a good idea to write to its author. I can't usually say much about them.

Drupal module Using highlight.js in Drupal
phpbb 3 mod Mod for [code] .. [/code] blocks in phpbb 3
phpbb 2 mod Mod for phpbb 2
IP.Board mod Mod for Invision Power Board

Made something similar — send the link!