Nyha. I think that Sai's very funny. Considering that he made that joke. Only, I don't like his fake smile. I also pity him cause Sakura and Naruto are angry at him. Poor Sai.
And Yamato??? I don't know much of him either. He's the new assigned sensei to Team 7, right? I guess he is okay, considering him as an Anbu.
I only know little of the new Akatsuki character. Who? The girl with the paper Rose on her hair? Her name's Konan. She was an orphaned that Jiraiya took care of. She uses paper as her equipment. That's what I know of her.
The granny and the old guy??? There siblings. I think. And... Elders of the sand village??? I dunno. I forgot.
Anyways, that's what I know of them. ^^