posted a featurette on Sackbots, which are little AI versions of LittleBigPlanet 2's Sackboy (or girl). Sackbots allow you to add a lot more movement and intelligence to characters in LBP2's levels -- you can set them up to follow Sackboy around, interact with the environment, or, as the video shows, teach them to dance.
And honestly, we're a little bit more excited about that last option. Yeah, it's nice to set up Lemmings-style puzzles or command an army of cute little blockheaded robots. But sometimes you just need backup for a dance party.