A website I mentioned as a source for free music also created a storyboard maker which might be of interest - an online script to generate a storyboard template based on your selections.
http://www.incompetech.com/beta/linedGr ... board.html
Storyboard Maker
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Storyboard Maker
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It is a nice idea, but I still prefer something like celtx, free, open source and cross-platform for Windows, Linux and Mac OS X.
...I love celtx too! Although it's oriented to construct "literary" scripts and I always have need a good app to can write properly "technical scripts" (I don't know if you call it so), you know, that structurated pages where you write a more detailed script with a description & timming of each plane, the camera info/effects and dialogue/sounds into their respective camps... well, just like in a storyboard but with words intead draws (although it can contain draws too), it's more like a instruction manual of the story, I do it actually in MS Word using tables but finally it can result in a madness as number of pages grow, so the question is... do you know is such an app could exists? I'd be soOo nice 

Yes, but it's not cheap, ToonBoom Storyboard (900 USD). Judging from the presentation videos, it seems to be very powerful, though.
Perhaps a better solution is this software (free for students and personal home use, available for Windows, Mac OS X, and Mac OS 9):
http://www.atomiclearning.com/storyboardpro
It is meant for video editors, but you can use it for animation storyboarding as well, by drawing images and use the still button, and replacing that with a finished clip into production. I guess it is fine for learning purposes, but beyond that, I wouldn't use it.
Perhaps a better solution is this software (free for students and personal home use, available for Windows, Mac OS X, and Mac OS 9):
http://www.atomiclearning.com/storyboardpro
It is meant for video editors, but you can use it for animation storyboarding as well, by drawing images and use the still button, and replacing that with a finished clip into production. I guess it is fine for learning purposes, but beyond that, I wouldn't use it.
oOoh, yeah... I knew about that and you don't know how happy I'd be with it... Anyway I think that when Moho implement sound tracks we'll have something similar for only 99erhmm... 199$
But well, when I was talking about "Technical Script" (please, someone tell me how you call it in english!) I was reffering to something like this:

...No audio-visual content but only words to get all the original script ready to be "filmed" ...I like that "over paper" plannification method but sometimes it's a little hard to do propertly in a simple Text Editor like MS Word and well, that's for I'd love some app (specially if it be the more similar to celtx
) specially designed to facilitate such task...

But well, when I was talking about "Technical Script" (please, someone tell me how you call it in english!) I was reffering to something like this:

...No audio-visual content but only words to get all the original script ready to be "filmed" ...I like that "over paper" plannification method but sometimes it's a little hard to do propertly in a simple Text Editor like MS Word and well, that's for I'd love some app (specially if it be the more similar to celtx

I could be wrong here (it's happened before), but I think the process you illustrated is called "slugging" in English. That is, timing out each scene, allocating sections of soundtrack and so on. If someone else knows different, please say -- I'd hate to be spreading incorrect information about.
You can't have everything. Where would you put it?