I also liked the music at the beginning. It's a different version of a track whose name I forget.
It was a slower, more bombastic version of a portion of "This is Gallifrey: Our Childhood, Our Home."
As for the episode ... really, it was better than it had any right to be. There was still some eye-rolling, ludicrous bullshit (the Star Wars sequence with the missiles was just silly, and introducing and then dispatching the Time Lords like any other villain of the week -- in the span of ten minutes, no less -- was rather odd), and there are still some major structural problems with the larger story itself, the biggest of which is the entire Naismith thing, which really had no function whatsoever and a quick rewrite could have excised the characters entirely ... but my wife and I still enjoyed it, much more than Part I, which we re-watched immediately before this one. Both episodes were utterly insane, but Part II wasn't hugely retarded and insane, which was the biggest problem with the first part.
It is kind of tragic to think that the Tenth Doctor is depressed about his death and doesn't want to go. He's understandably sad about the demise of his current incarnation, but as his new self, he's got a whole life ahead of him and he doesn't even care that he was sad about it, and maybe isn't even capable of caring that he just carked it, because of the focus on a new life. He just gets all happy and excited.
I do hope, now that we've seen the Time Lords as the colossal douchebags they've always been, that we get to have a Doctor that doesn't suffer any survivor's guilt / species angst.