Smoother and new interface give an ultimate power over office suite. When I looked at the new interface and liked at first sight. One thing is that we can easily use and navigate the options with new interface. Ribbon interface will help me to quick access to the tools, I always use keyboard shortcuts .As compared to office 2003 interface task Panes, toolbar and menus are gone.
On important features liked is that can open XML files. Normally I use Word, Excel, PowerPoint, Access. Graphs and Charts can be easier and eye catching templates make me getting good presentation on office desk. On office desk we will use Outlook and one of the best without any hanging. Office 2007 loaded with amazing functionally, better interface.