The golden levels of each class!

[Cen]

Almost every class if not every class has a golden level where they get a great amount of tools, or an amazing tool that is life-changing to the character, or a series of clickies that line with spells or abilities giving them their true golden level. Some of them are a lot easy to pin down than others but I wanted to ask what you all thought the golden level for every class is.

For example I consider 34 to be a golden shaman level and 30 a golden SK level.

What are your picks?