The jump in quality between the two seasons cannot be emphasized enough. For me, Season 1 had a handful of good episodes at best. Again, it wasn't an abjectly awful season, but it was so rough in so many places.
Season 2, literally every episode has been hitting the mark. I felt like I was watching a mass effect storyline unfold, like curing the Krogans of the genophage. (and yes, I know ME is the one who took inspiration from Star Trek, so I know it isn't copying ME, but I experienced ME first so I feel the similarities from ME's direction)
And also lets again point out how fucking amazing the show looks. I can't imagine what this must be costing CBS to air every week.