In Fast 10: The Last and the Furious, Vinny Diesel literally merges with his car to become a transformer and he fights The Rock in Space.

Ragnarok, despite being popular, is not a very good movie

Don’t these people know better than to get on a bus with Keanu Reeves? 

I think it's Earth-1 Gotham. Same as Flash and Arrow.

First I want a New Adventures of Lois and Clark with THAT Lois and THAT Clark.

The best for me was Ollie slagging on Iris helping Barry out, but Barry correctly pointing out Felicity practically invented hero quarterbacking

Yeah, there are advantages to disadvantages to both. The AU Nazis stuff made it easier to tell a more continuous story, but imo it also got a bit overstuffed with characters. I actually kind of prefer this more episodic approach.

Tyler Hoechlin humbly greeting the awed Barry and intimidated Oliver and telling them to just call him Clark is a great example of how perfect he is on the role & especially why he works as Melissa Benoist’s cousin

I liked how they used Oliver to voice actual fan complaints about The Flash.
“Why are there no toilets in your prison cells?”
“You can’t go 9 hours without a motivational pep talk!”
And Barry did the salmon ladder. The only thing missing were complaints about the lax security at Star Labs.

According to the Flash Writer’s Room Twitter, that joke was based on how one of the writers on Flash reaction to meeting Stephen Amell.

Amell and Gustin’s chemistry really drives the whole thing and makes it work. I also loved Barry closing his eyes in embarrassment when Oliver admitted that he was puffing his chest out to try to impress/ not be intimidated by Clark.

“Could you take this seriously for, like, 90 seconds?”

I loved that “You have failed this city” was Oliver’s go-to opening line when he first went out as The Flash.

That entire scene killed me. I love how they used this to show the extreme differences not just between the show’s two leads, but also the team dynamics as well.

The whole of Team Flash attempting to follow Oliver into the STAR Labs Deep Thought Hallway only for him to turn around and ask what they were doing was my favorite gag of the episode.  Extremely close second for that Smallville music hook, sweet mercy.

The funniest thing to me was Barry freaking out repeatedly about Iris and Oliver being in bed together & the possibility that something could happen between them (Iris once claimed that Oliver was on her “free list”)

Well of the three people talking about it (Ralph, Cisco and Caitlin), none of them knew about the AMAZO boat or Ivo’s operation, which would’ve been a good ten-plus years ago. I do like that the show left it open enough that you can reconcile the two though.

Looks like they re-used the construction site 3D model from last year’s crossover.

They did a good job of referencing the ongoing arc on each show for fans who are caught up.  But they didn't go so deep that they confused fans who only watch one or two shows.

I loved it.