Bukkit

Many Custom Signs like Soup Signs :D

"Friendly or Dangerous" is a plugin mainly for Survival games, which could be used mainly for MineZ and games like that.

Allows you to remotely administer your Bukkit server.

The best support plugin on the block!

Gives torches durability, and powers off lighting when not in its radius/

NoDropEmpire

InvisibleZone

Bobjoe's Alert

Shoot bats that other players are riding on while riding on a bat of your own.

Make blocks that shoot away

A Simple yet effective plugin allowing you to see all banned ips/players on you server.

MinigameManager

Group chatting plugin for Bukkit servers

AwesomeMcChatBlocker

OPAll allows everyone that is on the server at one time to be OP on the server

VIPAllowances

PEXDefaults

Optimise

A fun suite of tools for admins to troll their players!

SuperNuker