Below are a list of sample plugins for CraftBukkit. These while are completely function, are written to showcase usage of the BukkitAPI.
This plugin is similar to a hello world plugin. However, it also demonstrate configurability.
This plugin provides home points for players to teleport to. It demonstrates some more advanced patterns in bukkit plugins.
This plugin provides an example for using the AsyncPlayerChatEvent properly. In this case we examine how to use a player location in a thread-safe manner.
In addition to maintaining sample plugins, I also maintain this maven archetype that can be used to generate the SampleBukkitPlugin