Illustrator Tom Stults imagines what the posters of popular movies would look like in an alternate universe...if they'd been made earlier or later or in a different setting. He's done dozens of these...the latest "What If..." set is here with links you can follow to his past sets. I could caption these but they're pretty self-explanatory.
Some of these are ridiculously spot-on, revealing Hollywood's casting tropes and near-impressions some actors make of older actors' careers (intentional or not). And that Mad Max / Buster Keaton thing works really really well actually.
I featured Stults' first series of these several years ago...I'm glad he's continued making them.