I've seen all ENT episodes more often than is probably healthy so I'm often not sure what to think about them.
I recently rewatched Broken Bow
and one thing that struck me was the odd pacing. This is also a problem in later episodes. Even though the story was exciting, my mind wandered off from time to time because the pacing wasn't quite right. I agree that the childhood scenes were a bit awkward, especially the whole "you can't be afraid of the wind" thing. Also, the decon chamber. While in principle, this is a good idea because it shows the problems early space travellers would face when visiting alien worlds and ships, it is obviously just introduced for showing us some flesh.
There are a lot of things I liked about the episode, e.g. the way Archer is confrontative with the Vulcans. I love how he totally proves their point by threatening T'Pol.
I also loved Rigel X and I wish the locations on the series had stayed more like that, a bit more dirty than we're used to on Star Trek. They always did a very good job of building locations with a lot of nice details and touches, though.
I remember that when I watched Broken Bow
for the first time, I was immediately sold on the crew and especially Archer. I appreciated the fact that after all-too-perfect Janeway we'd get a flawed, slightly crazy captain for a change. Yeah, he's a prejudiced jerk, but somehow fun to be around. Or to watch, at least. But I'm probably pretty alone in that regard.