Another project in the works -- this time over the next few months, not weeks -- is to apply XML to a number of churchly applications, including the production of worship orders of worship (also called "orders of service" and "service sheets" -- did you get that Google robot?)
Yes, I need help on this project.
First, I need to get my hands dirty with XML. (Fortunately, I'm doing that at Day Job, too.)
Next, I would like to know from work-a-day ministers and church administrators of different denominations what kinds of things you put in orders of service.
Please add these and other thoughts in the comments.