Two really good reports that are ideal for generating marketing actions from, have issues with adding to campaigns - the Missing orders drill down - allows 'Add to Campaign' from the menu (see screen shot) but when clicked and campaign is chosen - no contacts are actually added to the chosen activity.
Then the Sales report 'Customer's not ordered in a year' - although the Company is included on the report - 'Add to Campaign' is missing from the menu, see screen shot (should this be dynamically added to this menu if a Company Field is included on a report)