Recent Comments with Gravatar is a WordPress widget that does the same thing with the standard Recent Comments widget in WordPress >2.8 with addit
Recent Comments with Gravatar is a WordPress widget that does the same thing with the standard Recent Comments widget in WordPress >2.8 with additional gravatar images and different formatting for author comments. The gravatar image is displayed along with the comment and the author link, so it will be easier for us to identify the author. With this additional features, the Recent Comments Gravatar should make your blog more colorful.
Also recently added: the timestamp of the comment in the form of how long the comment has been approved. For example: 1 minute ago, 2 hours ago, 3 days ago, 4 weeks ago, etc. This timestamp format should be more suitable to the context of recent comments.
In the Appearance -> Widgets in WordPress 2.8 or newer you'll find the Recent Comments with Gravatar widget. After adding it to your sidebar you can enter a title for the Widget, and all settings required for this widget to work properly.