well I think Kakashi thought maybe that jutsu wouldn't work on him because of his sharingon eye. But Itachi completely saw through it. Now on Gais part... he said to look at his feet.... thats not looking into the eyes so probably be able to avoid some of the jutsu. I think because of Gais speed and specialities he would put up a better fight than Kakashi.

One thing I thought was stupid was when Kurenai openingly did her jutsu right in front of Itachi with his sharingon on knowing that he can copy and counter what she does. (I know that was from 81)

Oh and whoever said earlier that Sharingon see into the future (to lazy to see who it was) it cant.... and as long as they dont look into the eyes of the person with sharingon they can avoid some of the jutsu like Zabuza said when fighting Kakashi. Keeping distance and no eye contact.

I wanted to see Gai fight Itachi so badly just to see what he could do. They never really show Gai go all out and fight and I loved watching Lee fight and I know Gai is way better than him.. just has to be... I want a good fight with Gai!!!! I would also like to see Anko get into a freaking cool ass Fight!!