Because everyone else is posting them, here they are with my thoughts below:
Frankly, I was underwhelmed by both pieces, we've had a really good Thor trailer, and this one didn't feel as good, even if it showed new footage. The Captain America piece was better, perhaps because I was excited to see the first official footage from the film, or maybe because it seemed to provide more of a plot overview during its brief air-time. I still wasn't as amazed as when I saw the Iron Man 2 trailer or the above Thor trailer however. Perhaps as we approach the release date of the film a more solid preview will emerge than the teaser we got during the Super-Bowl. They at least accomplished their goal of making me want to see the movies more, so they have that going for them. I was still more excited by the game, however.