One of the features of Google Docs has been updated; Find and Replace. In the past this wasn't really like the feature in desktop word processors, it was basically replace all and was only moderately useful. Now they've updated it, such that you can replace all or find next and then replace individual occurrences. Also, this feature has options such as case-sensitive matching.
I really like the style and location of this new feature, hopefully future additions to the Google Docs team will look as nice.