At the Ohio LinuxFest, I had the pleasure of meeting Rev Don Parris of Blue GNU and author of Penguin in the Pew. Got into a great convo with him and a guy who is Greek Orthodox. (I forgot your name. 
If any of you know that guy, let me know in the comments section.)
Although Rev Parris is a National Baptist, he is aware of the historical aspects of the Reformation and in the Early Church. Ditto the Orthodox guy. Not only that, we have seen the wooly aspects of American Protestantism (from Wesley/Finney onwards)…and how those within FLOSS got burnt with it. One thing lead to another and we are thinking of setting up an unofficial Itinerarium service, to be held the day after LinuxFest 2008 [Sunday morning].
Very early and preliminary plans involve the Order of Matins. My point of reference is from the Lutheran Service Book of 2006. One thing about the order of service is that it is unfettered from recent innovations. As seen in the rubric, there is no sermon, so no one would feel weird if one guy would preach something squicky. This is not an “altar call”/”turn or burn” deal– this is strictly a organized prayer service for those journeying home. No one will be pushed nor foisted.
Suggestions are welcome.