Anyone name this addon?

[Weens]

It features in the video Curse vs Hydross the Unstable, and pretty much all the videos with Mackelina's POV. It's the one in the bottom right corner that makes your raid frames look like a chess board. As people take damage the squares get shorter and shorter indicating player HP.

Thanks in advance.

Edit: Thought a link would help http://www.warcraftmovies.com/stream.php?id=36557

[yoshi245]

I think that's Grid.