So I'm looking more at individual episodes for the short form award. I'm inclined to think that 2-21 "Zero Day" or 2-22 "God Mode" are the most SF-nal - 2-21 is the one that reveals how The Machine is evolving its consciousness, 2-22 shows what happens when an omniscient AI is in your life, but I think on the whole 2-21 is the one I prefer. Or I may just nominate both.
Any thoughts? Or is there a better contender I'm missing?