I know, I know, it's incredibly early to be posting about this, but people are already thinking about CCSF 2010 over on Ctopia. Please check out the thread here, as the ideas are so varied that it would take me ages to cross-post them all 
3kul wrote:
... There's certainly no pressure to get anything done right away, but there's no real harm in thinking about CCSF 2010 now even if it's quite a ways off, as I believe that part of what made CCSF '09 so successful was the extensive planning that we did for it beforehand...
... For now, think about answering the following questions:
* When do we want to hold it?
* How long should it run for?
* What kind of theme do we want to go for?
* Who will be organizing it?
* What kind of site should we have for it?
* How can we make it better than CCSF '09?
None of these questions can be answered quickly or easily, and they'll probably require a bit of thought and a lot of public opinion (ie: polls across several forums).
Oh, and for those of you wondering, regardless of whether or not I'm available I have no intention of organizing CCSF 2010. As much as I thoroughly enjoyed taking on this year's CCSF I'd rather let somebody else have the opportunity to organize next year's CCSF 