Denizen/Replaceable Tags

NPC

<npc.id>	The ID number of the NPC.
<npc.location>	The coordinates of the NPC. [x,y,z,world]
<npc.location.previous_location>	The last location the NPC was at.
<npc.location.standing_on>	The Bukkit block name that the NPC is standing on.
<npc.location.standing_on_display>	The formatted block name that the NPC is standing on.
<npc.location.world>	The name of the world the NPC is in.
<npc.location.world_spawn>	The coordinates of the spawn of the world that the NPC is currently in.
<npc.location.x>	The x coordinate the NPC is at.
<npc.location.y>	The y coordinate the NPC is at.
<npc.location.z>	The z coordinate the NPC is at.
<npc.name>	The NPC's name.
<npc.name.nickname>	The NPC's nickname.
<npc.owner>	The owner of the NPC.

Player

<player.chat_history>	Last message the player sent.
<player.chat_history[X]>	Message the player sent X times ago.
<player.equipment.boots>	The Bukkit name for the boots the player is wearing. Can also be used for chestplate, leggings, and helmet.
<player.equipment.boots.formatted>	The formatted name for the boots the player is wearing. Can also be used for chestplate, leggings, and helmet.
<player.health>	The player's health, 1-20. Each number is half of a heart.
<player.health.formatted>	The player's formatted health. Can be healthy, scraped, injured, seriously wounded, and dying.
<player.health.percentage>	The player's health as a percentage.
<player.inventory.contains.display[display_name]>	Checks if the player's inventory contains an item with a name chosen on an anvil.
<player.inventory.contains[item_id].qty[#]>	Checks if the player's inventory contains a certain quantity of an item. Can be true or false.
<player.food_level>	The player's food level, 1-20. Each number is half of a thing-on-the-hunger-bar.
<player.food_level.formatted>	The player's formatted food level. Can be healthy, parched, hungry, and famished.
<player.food_level.percentage>	The player's food level as a percentage.
<player.item_in_hand.enchantments>	List of enchantments on item in player's hand.
<player.item_in_hand.enchantments_with_level>	List of enchantments and their levels on item in player's hand.
<player.item_in_hand.enchantments_with_level_only>	List of levels of enchantments on item in player's hand.
<player.item_in_hand>	[Planned v0.9] Contains all details of the item in the player's hand.
<player.item_in_hand.data>	The material data of the item the player is holding.
<player.item_in_hand.display>	The name chosen on an anvil for the item the player is holding.
<player.item_in_hand.durability>	The durability of the item the player is holding.
<player.item_in_hand.id>	The ID of the block or item the player is holding. All block and item IDs are found here.
<player.item_in_hand.lore>	List of lore on item in the player's hand.
<player.item_in_hand.max_stack>	The maximum amount you can have in one inventory slot of the item the player is holding.
<player.item_in_hand.material>	Bukkit material name of the item in the player's hand.
<player.item_in_hand.material.formatted>	Formatted material name of the item in the player's hand.
<player.item_in_hand.qty>	The current amount of the inventory slot of the item the player is holding.
<player.is_banned>	Whether the player is banned. Can be true or false.
<player.is_online>	Whether the player is online. Can be true or false.
<player.is_op>	Whether the player is an operator. Can be true or false.
<player.location>	The coordinates of the player. [x,y,z,world]
<player.location.bed_spawn>	The coordinates of the last bed the player slept in, if any.
<player.location.cursor_on[X]>	The block the player's cursor is on, within X range.
<player.location.standing_on>	The Bukkit block name that the player is standing on.
<player.location.standing_on.formatted>	The formatted block name that the player is standing on.
<player.location.world>	The name of the world the player is in.
<player.location.world_spawn>	The coordinates of the spawn of the world that the player is currently in.
<player.location.x>	The x coordinate the player is at.
<player.location.y>	The y coordinate the player is at.
<player.location.z>	The z coordinate the player is at.
<player.money>	The amount of money in this player's account. Requires Vault and an economy plugin.
<player.name>	The player's name.
<player.name.display>	The player's display name. (The one that shows in chat.)
<player.mcmmo.level[skill_name]>	The player's current level for an McMMO skill.
<player.money>	How much money the player has, as a number. (0.0, 1.5, 2.25, etc.)
<player.money.asint>	How much money the player has, as an integer. (0, 1, 2, etc.)
<player.money.currency>	The currency set in this server's economy plugin.
<player.money.currency.plural>	The currency set in this server's economy plugin, in its plural form. Examples: Dollars, pounds, coins
<player.money.currency.singular>	The currency set in this server's economy plugin, in its singular form. Examples: Dollar, pound, coin
<player.time>	The player's time in ticks, from 0 to 23999. For a quick view of what different tick values mean in real life hours, look here.
<player.time.period>	The time period for this player. Can be "day" or "night".
<player.weather>	The current weather in this player's world. Is "storming" if there's a storm, "sunny" if the weather is clear and it's daytime, and "clear" if the weather is clear and it's nighttime.

Text

Colors

<aqua>
<black>
<blue>
<dark_aqua>
<dark_blue>
<dark_gray>
<dark_green>
<dark_purple>
<dark_red>
<gold>
<gray>
<green>
<light_purple>
<red>
<white>
<yellow>

Pssst...

http://pastebin.com/KBADLinZ
Here is a summary of them :)
-Jeebs