Henrique, I highly encourage you to take a deep look at Michael Heuer's LiCK library. There are some great things in there that take advantage of a functional paradigm in a generally functional-unfriendly language.
And while we're talking about functional style and other nerdery, I submit for your consideration my attempt to implement a Closure in Chuck to avoid overmuch global state. This should appeal to you JavaScript geeks out there as well. It's influenced by ideas in LiCK. And while it's a bit harder to read than your traditional Chuckian style, it's the most bang-for-buck (in terms of lines of code) I could get out of Chuck in a short session.
Comments most welcome.
Enjoy!