I actually think, oddly enough, one of my favorite episodes from season 1 was 'Dear Doctor'...
By the end of the episode, you can actually understand where the Vulcan's are coming from, and why they tried to hold earth back somewhat... even Archer comments that he knows why the Vulcan's did it now...
Was quite a turning point for Archer's character, and i liked how they brought the humans over to seeing the Vulcan's point of view
M