A question that I've had on the back burner for quite some time is what are the functions in SharePoint calculated columns. I've taken a cursoury look here and there and never found the answer. I've recently been passing direct messages via twitter to
AndrewClark, @sharepointac, and he sent me a message that had the answer I've been looking for
http://office.microsoft.com/en-us/sharepointtechnology/CH011711171033.aspx