Been playing a whole lot of Little Big Planet beta lately, i have to say it's simply amazing. The full game will last for many years im sure, here's an example of what user generated content people are doing http://www.youtube.com/watch?v=P1Bz-2TS9NE.

Sony have also announced that they have 9 PS3 first party exclusives that they will announce for the first time at TGS this week, so hopefully there will be many games to look forward too.