Try something out. Just for funsies.
The last two movies I've watched made reference to Sisyphus, who in Greek mythology was sentenced by Hades to roll an enormous boulder up a mountain, only to watch it roll back down. Then do it all over. For eternity. This is something that, quite frankly, I haven't heard anyone ever make reference to. I'm sure I learned about it in junior high school or something, but nobody ever says "that just seems like a Sisyphean task" or "that guy, he's like a modern day Sisyphus". So it seemed really odd that two movies in a row would contain this reference.
Now that I've put Sisyphus fresh in your mind, see if anyone else makes reference to it over the next few days. Maybe I never noticed people making that reference, and maybe it was just a bizarre coincidence of obscure references.