I just finished watching 'Bodies' and we have to agree on one thing:
Timecrimes is the only proper time travel movie ever made.
Spoilers below...
Every other movie either tries to take time travel seriously (Primer, Minority report, Travelers) and fails by creating paradoxes or takes it lightly (Back to the future, Hot tub time machine, Groundhog day) and is not a real SciFi movie. Timecrimes is the only perfect loop and hence the only movie that avoid paradoxes. And what a loop at that. The reveal is just perfectly timed giving away each detail step by step. You basically figure it out together with the protagonist and watch him change his decisions as he realizes what's going on. The loop is the entire point of the movie and that's the only proper way to do it.
Bodies was close but of course they had to add a happy ending there and break the loop in the last episode which was pretty weak.
As opposed to the very real science of time travel? Marty fading was an excellent visualisation of how Marty's altering the past, and hinted that there's a level of housekeeping the timeline does to keep the world consistent. It's just one of many theories about time travel that have been depicted in film, even if it's not your personal favourite theory.
Not a movie, so maybe not a counter point, but I rather liked the show Dark on Netflix. I think they handled the subject matter well, without getting spoiler-y.
This movie almost ruined my relationship with my then girlfriend/now wife. I saw it and thought it was the greatest thing since sliced bread. So I super recommended it to her and she... Did not agree :P It's a very weird movie though, so I get it.
The Edge of Tomorrow is my favorite. Now I didn't exactly like that the alien's primary form of attack was "Beyblade" mode, but everything else about the movie was pretty great.
Yes, I mentioned it in my post. The idea that you can only travel back in time to the moment the machine was turned on is great and helps you avoid many paradoxes. It's a very close second to Timecrimes but the ending was very confusing with too many timelines created at the same time.
I just re-read this the other night. The original comic run is fantastic and I forgot it was going to get made into a film but it's been several years since that announcement.
Why does a time travel movie have to have a perfect loop to be "correct"? I'm personally a fan of time travel stories that result in branching timelines, where nothing is written in stone and everything is fair game for alteration. A loop is just boring, as nothing has any consequence.
Essentially anything that isn't talking about stable time loop have to be either be written by the greatest sci fi writer ever or never be written at all. Humans really need causality.