Justice League

Stop me if you've heard this one:And there came a day unlike any other, where Earth's mightiest warriors, misfits, and freaks found themselves facing a common threat: an ancient evil and his invading space alien army, but not before fighting their overpowered trump card and bickering amongst themselves. And the post-credits scene teases at a greater threat to come.
I've said it once, and I'll say it again:

DC movies tryin' to play catch up to Marvel, but they're rushing too much and letting their blatant borrowing show.

But honestly, "Justice League" was everything I expected based on their past entries (with "Wonder Woman" being the outlier). But this time, they certainly TRIED to make it more fun and appealing.

The actor chemistry for the most part is there; of particular note is Ben Affleck and Gal Gadot, with them both being battle-weary heroes trying to fill in the shoes of the dead Man of Steel, taking solace in each other as respected warriors, and being the proactive ones in the incoming alien invasion. Newcomers Ezra Miller as black-haired, super adorkable Barry Allen, Ray Fisher as a Cybertronian Protoform, erm Cyborg, and Jason Momoa as essentially Maui from "Moana" are all serviceable and seem like really interesting characters. Of course the main desire is that we wish we could've seen them shine on their own in their own film, like they did with Gal Gadot's Amazing Amazon Princess, but that's a minor gripe.  The interplay between all of the team (which for some reason is NEVER referred to as the Justice League...or Superfriends for that matter) members are great and I would love to see these characters in another movie all together. Whether or not I believe they can carry their own movie will be up to what they show us in future trailers.

The one big downside to all these great actors and characters...has been my same gripe ever since he let his adoptive father get sucked into a tornado: SUPERMAN! His scenes, especially with his supporting cast, were unbearably cheesy and kept on reminding me of bad times. The two things they've improved upon with him is that they actually make his suit a better shade of blue and his primary focus is back to saving the civilians instead of beating up the bad guy like Goku. (And it's only a spoiler that he got better from dying in "Dawn of Justice" if you've paid absolutely no heed to the promotional materials, posters, or trailers for "Justice League")
 
Speaking of bad guy, the fiend from Apokolips was not the promised Darkseid, but one of his core group of sickos named Steppenwolf...and he's a generic alien baddy bent on conquering the Earth and controls droves of mindless minions that fly and shoot lasers. Nothing really interesting about him except the way he talks to the Macguffin boxes makes him seem like Norman Bates talking about his mother. And while some people would complain that Darkseid would've been a better threat and would mirror better with the start of the New 52 and the animated film "Justice League War," I want to believe they learned their lesson about playing their major-threats-card too early like what happened when they introduced Doomsday and his inevitable destiny in "Dawn of Justice."

As far as how well it stacks up against its predecessors in the DC cinematic universe, it is most definitely much more entertaining and less anger-inducing than "Man of Steel" and "Dawn of Justice." There are jokes, actual human emotions, well-balanced screentime for each Justice League member, a nicer lighting and color palette, and most thankfully, a minimum of interactions with the superheroes being angry at each other for petty reasons. Overall, a fun superhero flick that's simple to digest that doesn't seek to piss off their fans.

For a creative overview from a fellow movie-reviewing friend that lists three pros and three cons, please go here.
For a SPOILER-FILLED rundown of the movie's events told in a way similar to how Michael Peña told stories in "Ant-Man," go here. 

Also, a flashback of a great war against the ancient evil had a member of a familiar space cop corps show up...and then die, but 'twas a nice bone to throw the comics fans.