The Slacker's Guide to World of Warcraft

MobInfo2
http://www.dizzarian.com/forums/viewforum.php?f=16

If you're anything like us, colored bars just aren't precise enough for how close you're willing to come to death when attacking opponents. We've had so many battles to near-death that we knew a more accurate depiction of our enemies health was necessary. MobInfo2 gives you an exact number to represent the amount of health or mana each monster has, liberating you from the persistent fear that your 900 damage eviscerate won't be enough to keep you from dying a mangled pile of Gnome bits. In addition, MobInfo2 tracks the number of each type of monster you've killed as well as what loot they've dropped after you've killed them.