Has mysterious formatting cropped up in the middle of your paragraph in one or more words? To quickly get it back to Normal (the Normal font style, that is), click Ctrl+Spacebar in the middle of the word.
Access your Paste Special options quickly with Ctrl+Alt+V (Works in Excel, too). The shortcut brings up the Paste Special dialog box.
Need to keep track of word and character counts, as well as other document statistics? Quickly bring them all up at once with Ctrl+Shift+G. To find out just the counts for one paragraph, select it and use this shortcut.