^ I am looking forward to seeing ORochimaru die. So what if it's be Sasuke's hands? Who would be better? Dying by the Akatsuki would be like a punk getting killed by the mob, and Naruto had a shot. With Sasuke, Oro's getting himself killed through his own misguided attempt to gain immortality.
Of course, there's still the matter of that curse seal--that seesms like a good ace-in-the-hole for Oro right now. Of course, with all the new jutsus that Sasuke suddenly learned, who knows what he's capable of.
We've actually barely seen Sasuke fight in part 2. And of course, if Itachi is stronger then Orochimaru, then frankly Sasuke killing oro is a step towards his dream.