Return of Reckoning

Played a healer a long time ago.
There used to be an addon that once you moused over a non party/wb member his health bar would come up on the screen and create a list.
You could lock members of this list so they couldn't be replaced.
This made it easy for watching / healing non wb/pary members

Anyone knows if its still around or what the name was of it?

That sounds awesome. It would definitely be helpful when playing a healer (been messing around a bit with them from time to time), so I hope someone is able to shed more light on the addon.