The foul on Malouda being called outside the box was correct -- Alves fouled him twice outside the box. Presumably advantage was called. Malouda muscled his way into the box, then feigned being hit in the face.
Drogba deserved a penalty when Abidal pulled his shirt. All the other times he went down in the box were legitimate no-calls imo.
I don't know quite what to say about the two handballs -- official rules of the game say it has to be deliberate for it to be a foul (either deliberately touching it or deliberately letting it hit you when you have sufficient reaction time), and neither one was, but I'm pretty sure that most referees realize that defenders really aren't supposed to have their arms extended when playing D inside the box.
The red card to Abidal for allegedly tripping Anelka was horrible as well.
All in all the ref was atrocious, and Chelsea took the worst of it, but I don't think it was quite as one-sided as many are making it out to be.