This isn't really a mod, just a line of code to add. It makes it where if you click to "reply with quote" it will automatically stick the member name of the person you're replying to at the top of the message in bold letters.
Hmmm...I've got this installed on my test forums at http://staging.windyhop.org/forum, and it works well, except when attempting to reply w/ quote to the *first* post in a topic.