Quote Originally Posted by Splash!
Yeah, I too am unsure as to where people are drawing conclusions from that Tobi is Uchiha Madara. I am pretty sure that all that line refers to is the power of the Sharingan. Just reinforcing the same idea by using different words. Even Sasuke was referred to as having the same sinister chakra as Uchiha Madara by the 9-tails.
As mage has already pointed out several times, the 2nd line wouldn't be in there if Tobi was talking about himself in the 3rd person. And even if the 2nd line wasn't there, I still wouldn't be to hasty to jump to the conclusion that Tobi is Madara.

My Theory:
It could be that some other mastermind is simply making use of Obito's half wrecked body and the lone sharingan eyeball that somehow remained undamaged inside his socket for their own purposes. I wouldn't put it past someone. Orochimaru tried to do the same thing. Maybe this host didnt care all too much about who it was or how badly damaged the body was, so long as it had a working Sharingan (Hunter nins aren't probably doing their job right). If someone who knew about the Sharingan's power happened to salvage his dead body from beneath the rocks and found that the lone eyeball had been preserved, I don't see why they wouldn't want to keep the body for themselves. They could have later fixed it up and possessed it.

I think Tobi's physical body is indeed that of Obito's. But Obito never seemed to have the right personality or the aspirations to be the big villain behind it all. Somebody 'pulled an Orochimaru' on him.
Yeah I would agree with you on a lot of your points made here...

I just don't think Tobi/Mastermind is Obito because even though Obito was a Uchiha, he was more like the "Nartuo" of the old group, where Kakashi was more like the "Sauske." I just don't think Kish would make a twist like that, it would just kinda be pulling the whole self-sacrificing and whole moral out of Obito. The same guy who said "Those who don't help their friends are worse than trash!" (or something like that). Doing a 180 on his character would be a bad move.

Now, I do think Tobi (before him reveling himself to be the leader), did act more humorous and like Obito, and he does his vision around the eye that Obito had left, but bleh ... NO =P.

Madara, we never heard from. I don't recall any part of the whole manga that reviled that Itachi did acutally kill his friend Madara. He kinda just went Sharingan crazy and obliterated his village. So Madara does seem like a likely candidate, and also he seems to be well knowledgeable about the Uchiha clan and also the Sharingin.

Tobi ftw.