I like episode 84 of Naruto. In fact, it's one of my favorite episodes of the Naruto anime. I know that Sasuke had his family and clan slaughtered by his own brother Itachi, and Sasuke is searching for his brother for revenge from that night on. For the people that have commented who like this episode would probably agree with me that this is wothout a shadow of a doubt a great episode.
For the people that have commented who expressed sympathy for Sasuke, I have a message for you. I know that Sasuke's bad night is tragic and incomprehensible, but now Sasuke is more determined to bring down his brother and repopulate his home clan. So, when he gets the deed done, the Uchiha clan would be back and Itachi's rampage would only be a lesser-visible downer. I am not trying to be insensitive to you guys.
And for the people that have commented who don't care about Sasuke's bad night and hate him now because he's gone to the dark side, I have another message for you. You may hate him now because he's turned into a bad guy, but I don't hate him. Sasuke is just lost in the darkness, according to Naruto, and he fell to choose Orochimaru for power because his thirst for revenge had driven him to the point to it. Now that he had learned from Orochimaru and has grown stronger, he is now on his own quest to defeat his brother for revenge of killing their family and clan. If you hate Sasuke and do not care of the night of itachi's slaughter and his quest to avenge the slaughter of his family and clan, you are just plain ignorant of the situation.