It’s always puzzled me why Microsoft never did show the ID of a SharePoint based list entry in the edit or display form. What do I mean by that? Well, out of the box, when you create a list in SharePoint, each item has an ID associated. This ID is then used to identify the individual records in the list. Once you have created an item in the list you can see the ID in the view

An annoying feature of Project Server 2010 when it shipped was the inability to fully customise the risk list of a Project workspace. Whilst most of the list could be customised, when you tried to modify the Cost, Cost Exposure or Exposure columns, you would get a really annoying ‘An Unexpected error has occurred’ message, even cracking open SharePoint Designer to try and modify those columns would result in an error.