As I understand it, The Flash merges content from both the DCEU and some older movies such as the Michael Keaton Batman movies.
What movies or TV shows should one watch prior to seeing The Flash?
As I understand it, The Flash merges content from both the DCEU and some older movies such as the Michael Keaton Batman movies.
What movies or TV shows should one watch prior to seeing The Flash?
The AV Club has recently published an article on this very question.
For what it's worth, these are their suggestions...
Essential:
For the completist:
Extra credit:
Although if you're going to count Back to the Future as a prerequisite, I guess you could also watch Birdman (2014), since it provides some meta-commentary on Michael Keaton playing Batman again!
I watched the movie a couple days ago. You don't need to see any other movies before this one. That being said, I basically agree with JayFor's answer. The Flash is a continuation of the story from Justice League, but the plot is not dependent on that movie or any others. It does feature characters and events from other DC movies:
Batman & Robin
Aquaman
Wonder Woman
The Flash does in fact contain a reference to Back to the Future. The only thing you need to know about BttF is that it starred Michael J. Fox. I've never seen An Evening with Kevin Smith, but I believe I know which scene in The Flash referenced it.