This is a supper cool new applet which brings the terminal to the dock! I usually like to start off with a nice screen shot:
This is just a nice easy way to have your terminal on the dock. I don't really see any advantages of using it other then it looks cool. The forum post about this applet is here. Also you can find the download link via that forum post too. I wont link directly to the download link because it will probably change if updates come out.
Also just to note, you can't drag this tar into the applets to have awn-manager install it. You need to extract the download and cd into the directory and run:
sudo make install
Then you will have it installed and be able to add it to the dock via your awn-manager.