Milan playing some enjoyable football. Ronaldinho in particular is fun to watch when he's in the mood.
They don't seem to be missing Pato at all.
I still don't think they're even close to being able to challenge for the title though, come the end of the season they'll be 10+ points behind Inter Milan. Despite the fact they play good football, they still look really vulnerable at the back, and not because they have poor defenders, but because most of their front men and midfielders do not defend for shit.