It's funny how once people point something out to you, it seems so obvious afterward. The things you're all saying about the second theme really seem to resonate with me about the emotions of the scene as they relate to Bane: the "animal" and "primal" sound, but also his rage and pain as well. It's like I knew how it felt, but not what it meant exactly.
Here's the clip that FrenchToast mentioned, with the same theme coming in at 3:28:
Here again, I think we can feel that sense of menace that darthnazgul mentioned in relation to the later fight scene.
As for the first theme, I think I agree with Code_R if you're saying that it relates to the two-note Bat-theme that's found in all the Dark Knight films. But I think it's different shape here is for more than the sake of variety. When I first saw the film, it stuck out to me, not only because it seemed like a clear homage to Elfman's Bat-theme, but also because of its sheer power. For the first time, we hear that two-note Bat-theme gradually rise (with falls in between), eventually reaching an octave higher than the first note, as though reaching some kind of success through struggle. That much seems clear enough to me.
But what puzzles me still is exactly what it is associated with. One thought that came to mind was the idea of Batman having "risen" in several ways in this scene. He's physically risen out of Bane's pit prison, he's risen spiritually by finding his fear of death once more and drawing on that to beat Bane in the final fight (as the inmate in the prison implied Bruce needed before his jump), and he's on his way to rising in public esteem by beating Bane and eventually saving the city.
I also think it's significant that (correct me if I'm wrong) this is the only time Batman appears in broad daylight. If that's true, it might be another signal of Bruce's spiritual rise to strength and confidence, or more specifically to self-knowledge. A progression from darkness to light is, after all, a traditional symbol for such a reading. But maybe that's going too far and reading too much into it. Any thoughts?
Baniac - yes, the Ludwig's definitely for Beethoven. He's my all-time favorite composer - I wrote a dissertation on his music and always have Beethoven on the brain, so the name just seems a natural moniker for me. I pretty much use it on all these online forums. And thanks - please do check out the site if you're interested in film music. I try to post twice a week and have a series of six posts on the Dark Knight trilogy. So now I have Zimmer on the brain!