What piece(s) of pop media have you not consumed that people would think you weird for not having consumed yet?
Just as examples:
I've never played a Pokemon game despite being just the right age where my peers were really into gen 1 as a kid.
I have yet to watch any of the Alien or Predator franchise movies (except Prometheus, which I didn't realize was in the Alien franchise when I watched it long ago) but am planning on rectifying that when I can get a chance.
I've never seen a single James Bond movie or know anything about the scenes or characters, except for the fact there's an agent named James Bond who likes his name and always looks dressed to the nines.