Yeah it's reaaally fun! Easily the most fun I've had with friends with a console game since... I dont know when!
This game is really at its best with a room full of friends. it's fun alone, but you just can't compare.
I haven't found any community levels made for LBP2 yet (only LBP1 levels, which you can still play), but I'm sure they'll start popping up and be crazy good like the beta levels (or so I heard).
Check out the game and gather some friends, everyone! I definitely recommend it.