I was pleasently surprised when I noticed that TortoiseSVN supported diffs in Word documents. I've made a number of changes to a requirements document over the past week or so and wanted to get an idea of the scope of changes before committing them, so I figured, 'What the hell! Let's try a diff.' I didn't honestly think it'd work as desired. I guess I figured it'd try to do it as a text file and come up with all the junk Word adds for formatting before and after the text. In actuality, the original was opened, tracking was turned on, then the newer version was [seemingly] pasted over the original content. The magic of Word's tracking features was then put to work to show me the differences. I love it! Great job TortoiseSVN (specifically, the TortoiseMerge) team!