Gonna watch that odo vid but before that I just want to say Star Trek I is a vastly underrated movie and it grows on me more every year. I’d argue Shatner was a far better actor than given credit for, based on his nuanced performances in the first 4 films.
I know everyone already loves Wrath of Khan, but honestly he's so great in that film -- one of the best performances I've seen him give, as an aging Type A captain who is forced to grapple with his growing mortality along with all the mistakes he made in his relationship earlier in life... an ex-SO who keeps at a somewhat cool distance and the son who hates him, and the ways he bucked the system and built enemies over the years. Then the whole ending to the third film, where he loses a lot of things he loved and/or had placed hope in, and trying to find that magic just one more time to save what he can and keep his promises, despite being emotionally gutted...
I can joke about some of his excesses especially earlier in his career, but he knows the character so well and he brings a lot of needed depth in those films. I am still kind of surprised at how good he is.
Edit: I don't know why Search for Spock gets less response from viewers, I remember being just blown away in the theater. It's so freaking awesome when a bunch of aged-out Star Fleet officers steal their old ship and risk their cushy retirement on this crazy chance to help people they love... and honestly, they're all done anyway, and the ship was being retired, so on one level Starfleet doesn't even give a shit but would crack down on them anyway just for breaking the law. And that's all before everything goes down on the genesis planet and we realize with growing horror why the world is reacting as it is.
Just that one bit:
Kirk: My god, Bones -- what have I done? (in agony)
Bones: What you had to do; what you always do; turn death into a fighting chance to live.
My jaw was just swinging open at that, I felt like I had been punched in the gut sitting there in the theater. (I was in high school at the time.)