MCBullsEye
Bow and Arrow BullsEye game plugin for Minecraft Bukkit servers
...Use any block as a target. When the block is hit it explodes.
This is the first beta. I believe most functionality is working properly, but I've only tested it on my machine. Any feedback is appreciated.
Known issues: Directional blocks may not stay facing the direction they were placed after the game is reset.
Future functionality: Disappearing target blocks.