Some quick answers to people's questions:
1. Apollo's no longer a Commander because he doesn't have a Battlestar to command. So he's back to Major (the rank he had at the beginning of "The Captain's Hand.") Last I checked, he's the CAG. (Go back to the beginning of "Torn" and watch Apollo ground Starbuck after the Viper training exercise.)
2. Keep in mind that the BSG rank structure is an amalgam of different rank structures. See
Ron Moore's blog and scroll way down for the ranks.
3. The whole fight between Adama and Tyrol was to make a point about not getting fat and lazy -- notice before the fight that Tyrol was slacking off his duties, and afterwards he went back to the hangar to work on a ship.
Myself, I'm not as thrilled with the show as I was in the past. Although there hasn't been any clunkers like "Black Market," I've found the show isn't giving me the intense nerve-wracking rush that I got from the first 11.85 episodes of Season 2 and from all of Season 1. I'm not sure exactly why, but a few things come to mind:
-For me, the show's become a little more predictable. (They obviously couldn't wipe out all the Cylons at the end of "A Measure of Salvation.") There's just less surprise moments. I don't think I've been surprised by the show this season since the battlestar combat scenes in the second part of Exodus, save for D'Anna's addiction to resurrections.
-Using flashback intercutting a bit too much (It was okay when they did it for "Scar" because they hadn't really done it up to that point, but they're going to the well too often now...)
-They're a bit sloppier: Tyrol's missing beard at the beginning of Exodus, the quick return of the Vipers from New Caprica near the end of Exodus, the lack of total continuity on the diseased Battlestar between "Torn" and "A Measure of Salvation" (it was obvious that they weren't in the same room as the one that Gaius went into, but they inserted a shot of the probe to make it seem like it), the very obvious real-world IDE computer power cables hanging out of the air filtration system that Helo messed with at the end of "A Measure of Salvation," the stretch of a plot for "Hero" (yeah, I know I said I liked that episode a lot, but the plausibility of it kept nagging at me).
EDIT: Might I add that I find the Apollo-Starbuck thing to be more interesting from the perspective of how much fallout there will be. They're both married to other people, so it's going to get ugly.