I’ve just released my newest plugin, called “Comment Spotlight”.
What it allows you to do is to “spotlight” specific comments on your blog with a custom image that you set up. For example, you might make a “Huzzah” image for particularly good comments, or a “Do Not Feed the Trolls” for… well, you know.
It also has a configuration screen in the Admin section (under “Comments” ‘natch!)
You can find it here: Comment Spotlight.
Scroll to the comments on that page for examples of the plugin in action.
Remember that this is a 1.0 release. It’s pretty simple right now, but I’m sure to add features down the road.