[Morima]

I have to disagree with you on some things, Bill Ferny. Saruman was not jealous of Sauron. He was deceived by Sauron, and had he any feelings towards him, it had to be plain fear. I can think of nothing else fitting better with the fact that Saruman, as proud as he is, eventually acknowledges Sauron as his Master.

Saruman bred the army for his own purposes, but since Sauron ruled a whole country, an enormous area, he was able to make his army thousands of times greater. That is a practical fact. He also kept slaves in the south. Obviously, a mockery and a "cheap imitation" is what it seemed to be for those who saw Isengard at that time, and so it says in the Book as well, but I mean, jealousy has nothing to do with that. And two thousand years earlier, when Saruman came to Middle-Earth, he did a lot of good, and there is little of what he all-over has done which can be described as "cheap imitations".

As for Gandalf, I believe that he and Saruman were jealous of each other, for different reasons. They were certainly never personally friends, either way.

This bit is a complex one - cause Tolkien never (as he said himself) wrote or said much on it.

Uruk-hai is Black Speech and means uruk-people, so I guess they were an own species. Also, they were huge and able to travel in daylight, as regular orcs were not. I don't really see what the question is, cause Treebeard states (at least a theory of) that this IS a breed of orcs and men, which that seems reliable to me.