Possible things we can explore: JSONP for mash ups; possible work arounds for the security issues in JSONP; a universal web service API for RSS aggregators so we can see some innovation in this space again; how AMASS and dojo.storage can change the game for mashups, since you don't need a server for storage; using JSONP to provide a universal authentication system; just how far can we push not needing a server for AJAX/DHTML apps using maships?
By the way, right now the coworking space is a great place to work and can accomodate a fair number of people (check out pics of the space at http://codinginparadise.org/coworking); however, we are looking for larger, more affordable space that can accomodate these kinds of workshops, though, and turn into a permanent place where people can drop by, work, innovate, and have community. Imagine a permanent Bar Camp, or a contemporary Homebrew Computer Club; let's make it happen. If you have any leads on this email me at bkn3@columbia.edu.