I agree with the above comment about the worldbuilding. With all these alien invasions/attacks year after year, it's good to see the show acknowledging the impact that would have on ordinary people, tying it all together from a ground-level perspective. It makes it all feel a lot more real and rich.
What I loved about this show in the first season was that it felt like real science fiction -- not just telling action and character stories with superpowers and high-tech/alien trappings, but doing what good science fiction does, exploring the consequences of its speculative ideas and using them for allegories about real social and philosophical issues. I didn't feel season 2 & 3 did that as well, but
Supergirl finally feels like a real science fiction show again, in both the exploration of ideas and the thought being put into the worldbuilding and the consequences of its concepts and events. I loved the bit about Nth metal being used to make steel. I'm so used to hearing it talked about in the context of weapons and strange powers -- it's a fascinating twist to see it integrated into everyday life, treated so mundanely. It's the sort of thing you rarely see in superhero comics, where the incredible inventions of the heroes almost never trickle down into everyday use.
I continue to be impressed with Sam Witwer as an actor. He uses his voice remarkably well. It's so fascinating to listen to him talk. And it's a challenging choice to make Lockwood so sympathetic yet so hateful. We have to understand how he sank to this point without actually agreeing with his point of view, and that's a delicate balance to strike.
Given that Lena isn't a huge fan of Supergirl, it's surprising that she went to the effort to stylize Supergirl's containment suit after her regular costume. Or is it programmed to automatically mimic the wearer's clothing?
I was not sure Calista’s footage was new. At first I thought it reused like Teri Hatcher as Rhea. We had one previous episode of Cat appearing only on tv. This was different footage? Which is great if true. It hopefully means more of her to come.
Given that it's from a press conference insert that was playing on TV in the background in the original scene, I imagine the raw footage ran a lot longer than the stuff we saw before, so I figure this is just a different part of the same clip.