I really like the built in calculated field for date handling, but it is restricted to a date associated to the current date. I have a customer using Opportunities to follow a project start and end date. At the end of the project, the number of days or year/months are then entered into a separate field. It would be nice if we could enter Start Date, End Date, then Calculate the number of days or years & months. I bet this would be useful for the headhunter users too.