Excel – Use CTRL-D to duplicate the data from the cell above you have selected. You can highlight multiple cells to fill them all too!
Outlook – No matter what you’re looking at in Outlook press CTRL+SHIFT+M to start a new message. Press CTRL-Enter to send it!
If your Office Applications are on your Taskbar, right click the Office application icon to see your list of recent files. Click the file to open it. Or right click on the file for other things you can do!