There's really no doubt about the Balotelli one. Sad for Tottenham though he wasn't sent off, he made the difference in the end in that match.
Still i got much more sympathy for Balotelli than Pepe, that guy is just mad. And in that case i think he did it on purpose, just look at the innocent face he is making from 0:13-0:16 when he's walking to the ref with actaully nothing to complain about, just to get away from the "crime scene".