There are two "Life in LittleBigPlanet" videos (Part 1 and Part 2) that are made to mimic nature documentaries, particularly of the Steve Irwin ilk. (I think they're narrated by Stephen Fry, the person who did the voice acting for the game.) It looks like there will also be at least a Part 3 at some point, though it hasn't shown up on the Playstation YouTube channel yet. There are also a couple commercial like things on there though, like "Making Fun", "Dream" (which has a cute ending) and "Sackzilla."
Okay, i think i've done enough unpaid advertising now for a game i don't even own yet on a system i don't even own yet :)