In the latest update, the pre-release 1.4.4 released today, you probably know that baby mobs can now be spawned easily in creative via taking the spawn egg of a specific mob and right clicking on that mob for babies (only works on mobs that can be bred). For me, this is most interesting due to new baby villager spawning opportunities. Before, it took forever to get a baby villager in creative, since the villagers seemed to resist having sex on command, but now they're able to asexually reproduce. Hooray!
Post pics if you have any ideas of what to do with a mass quantity of villager children.