Druid

From KotR Wiki

Druid Wiki
During Wrath this was an interesting set of articles and discussions, although it is unclear if the site has been updated for Cataclysm.

EJ Cataclysm 4.2 Resto Thread
The first post contains the basics - talent descriptions and model specs, stat priorities, caps and breakpoints, gemming and enchanting recommendations.

EJ Cataclysm Balance Thread
The first post is a concise guide to all things moonkin including skill and talent explanations, sample builds, stat priorities, caps and breakpoints, gemming and enchanting recommendations.

Moonkin Repository
Beginner's Guide to Boomkin - This one s a little less intimidating than the EJ one, videos of the rotation, etc.

Resto Haste Breakpoint Spreadsheet
A detailed spreadsheet of haste breakpoints with and without Dark Intent and the raid buff.

Resto Haste Breakpoint Graph
A nice visual treatment of the haste break points.

Cataclysm Caster DD Trinket Comparison
Comparison of trinkets for all damage dealing casters.

Cataclysm Healer Trinket Comparison
Comparison of trinkets for healers.