Separate inventories for Creative and Survival game modes
Set a world to be a always a particular time of day or night
Vortex manipulator. Cheap and nasty time travel. Very bad for you. I'm trying to give it up.
Another random teleport plugin
Set todo lists and reminders with alarms
A Dynmap add-on to display TARDIS locations.
Support JAR for the TARDIS plugin
Switch a player's GameMode at a preset time
FatPort is a teleportation plugin that lets you set one entry port with random multiple exit points.
CakePort let's you link two cakes together, and by stepping on one it will teleport you to the other.
SuggestionBox is a plugin for obtaining suggestions, comments, questions, and requests for your Bukkit server.
Warn players when there is no-one around
Adds Skyrim type warps to Minecraft Server
Faction based plugin to display garbled messages to non-faction players
Terrifying Weeping Angels - Don't blink. Blink and you're dead.
Change villager professions by right clicking them
Displays Minecraft time in a scoreboard and allows players to lock blocks for a set amount of time.
Automatically colours words in chat!