MY BEST FRIEND!
Note: Minify the command to avoid issues :)
Notch has added a new mob to minecraft:Zombie Golem
BEST THING EVER
More mobs:Nature skeletons 1.8.7 (Read the comments!)
A nice firework
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)