Lex did appear in the opening scene. He was the one playing chess with his mother.

When production moved from Los Angeles to Vancouver Calista Flockhart didn't want to move to Vancouver.

I read somewhere that Berlanti thinks secret identities are stupid. At least keeping their identity a secret from their friends and allies.

Lena is back next week.

You didn't like "Be My Yoko Ono"?

I've seen scientist/technician types wandering around in white lab coats.

No James at all.

Well, he does have Eve Teschmacher now, so he doesn't need to fuck himself. And doesn't need to in the supply closet anymore either.

I agree that CatCo serves no real purpose without Calista Flockhart, but why does Kara need to work anywhere else but the DEO?

It seems like Kara has given her secret identity to everyone but the general public. I suspect even Snapper Carr is going to clue in that Kara is Supergirl and give her a lecture about the ethics of using herself as a source, creating the news and then writing about it.

Speaking of Lego, I also like at the end credits there was a Lego Batman blocking the TV and the voice over says "Move your head, Batman" plus the Lego DC logo with the Lego Supergirl.

I think Jo will get a job as a desk clerk in a pawn shop.

Actually the story was by Andrew Kreisberg and the teleplay was by Eric Carrasco & Jess Kardos. Kevin Smith was just the director.

Also when Kara kicked the thug into the ventilation shaft Mon-El just stood there for a few seconds before he realized he was supposed to punch the other thug.

Would Ebenezer Scrooge have said "That a girl Danvers" after she stood up to him and told him she was going to count the money her way? It's obvious that Snapper is turning into Cat Grant but without the nice hair and suits.

But then we wouldn't have seen her awesome red dress and tattoos again.

The actual physical bodies of comets are black on their surface. All the ice gets burned off when they get close to the sun so just the tars and other carbon compounds are left exposed. The tails of comets are the stuff getting burned off.

People have also wondered why her heat vision is blue instead of the traditional red. I think it is because when she uses her heat vision her face becomes red and the blue makes this more obvious and it gives a better idea just how hot her heat vision is. With red heat vision this wouldn't be as obvious.

It was established last season that Livewire could generate powerful enough electrical arcs to kill Supergirl.

Just not that episode.