WorldEdit 4.7

Remove a griefer's lava, rollback to previous versions of the world, build a NPC village for your server, regenerate chunks, fix broken pools of water, move buildings -- fix problems quickly and easily! Administrate your server efficiently.

Some of the things that WorldEdit can do include:
* Build far away with WorldEdit's original brush tools
* Mine instantly with the super pickaxe
* Use your compass to quickly teleport to areas by left clicking or using /jumpto
* Replace a giant area with a block of your choice
* Choose an area and have it instantly restored from backups
* Level an entire mountain and replace it with natural looking terrain (with brush tools)
* Smooth an entire mountain quickly
* Generate spheres, cylinders, cuboids, forests, pumpkin patches, and snowy areas
* Copy areas, paste them, load them, and save them (compatible with MCedit)
* Kill mobs, nearby or across the world, and remove entities (arrows, items, etc.)
* Find out which chunks were in a region, look up your current chunk
* Count the statistical variation of blocks inside an area
* Ascend through ceilings, pass through walls
* Tie in with WorldGuard to protect areas
* Make everything you do that's repetitive not repetitive

Also this is required to make use of all the benefits of WorldGuard

Extremely useful plugin, I've used it many times not only for building, but also because things have gone wrong on my own servers before involving wood and fire, not to mention fixing griefs. Obviously because it's such a powerful plugin, restrict it to Admins (Not Moderators unless you really trust them).

But yeah, I wholly agree with this.