What I’d like to know is why Office 2007 apps behave oddly when you move the mouse over them when they don’t have focus. For instance, in Word 2007 (and Excel and Powerpoint), the only element that keeps its mouseover animation is the Office Button (and the minimise/restore/close buttons, actually). Outlook 2007 is a bit different – menus lose their animations, but other things (like the side bar with ‘Mail’, ‘Calendar’, ‘Contacts’, etc.) don’t. In fact, it isn’t just the animation that’s lost: if the application doesn’t have focus, the Office Button menu can still be opened with one click, but everything else requires two clicks (one to get focus, one to perform the action).