Pallies are overheal machines. I've raided with more overall overhealing than effective healing, plenty of times. It's all them druids and their damn HoTs. I don't use it much anymore, but gearing up it was a lifesaver. It's a lot of mana, but in a 5 man, just keep it on the tank and FOL everyone else = tank lives too. I've even regeared to be a haste healer for ulda, 500+ haste and tons of int and just spam HL. Throw up a bacon on an offtank and you can almost tank heal a 25 man by yourself - till the tank eats 2 20k hits in a row...
