The Like button is completely controlled by Facebook. You can try to test with your URL on their Like button configuration page:
developers.facebook.com/docs/plugins/like-button/
The important thing to note is that if you get things to work in that configuration tool how you want, we should be able to help you get it working on your site. We don't have any more control over the output than what you see on that page though.
In the Like button, there is an option for "Show Faces". On your site, that parameter looks to be turned off. Please go into the configuration of how you're showing the Like button and update the Show Faces setting to Yes.
The Comment box does not have any method to show the users that have Like'd a comment.
I hope that helps get you going,
Alex
Not showing who have LIKED
