Cats. And only cats. I pulled every poster out of Cat Fancy and slapped it up. The posters were lining the top of every wall, plus one whole wall all the way down, lol. My mom didn't approve of pop culture stuff, but I'm not sure I would have put it up even if I was allowed to, I just liked CATS!
Movie posters weren't a big thing when I was a teen, and living where I did, there weren't any concert posters around either. Plus, since I had to share a bedroom with two others, I didn't have a wall of my own to put anything on if it was available.