LittleBigPlanet isn't just about game creation, it is, the developers hope, a whole palette of tools that can be used to create anything from a puppet theater to graphic novels to pop-up books to music sequencer.
"It's a creation tool," said Kenny Young, LBP's audio designer.
The misconception that LittleBigPlanet is all about game creation is likely fed by the deep toolset included in the game that supports making games. Media Molecule included those because they wanted to make sure people could, if they wanted to, make their own games. But they hope that's not all people do with the game.