First video the PS3's Hall of Fame in Home is up, which is just XBox Achievements by the backdoor, but at least Sony is trying.
Secondly, LittleBigPlanet looks awesome. An emergent connected experience that is part artbox, part toy and part community experience makes it look like a awesome game.
The video below shows the tutorial bit of the presentation, but if you want to see the full video then I suggest you watch Part 2 of the Sony Keynote Presentation instead.