Common knowledge?

I was talking to a couple of my co-workers last night (sexy arms dude was one of them) about an 80's movie (well, me talking; them pretending to listen while thinking about how they weren't born yet) and I mentioned the two Coreys. Can you believe it-they had no idea who I was talking about. Doesn't everyone know about Corey Haim and Corey Feldman?!? I just checked and even Wikipedia has a page about them. See here. I'm finding myself talking about a lot of stuff and people that they've never heard of. I'm really not THAT much older than them. Am I just a freak and know too much pop culture crap? Or are the Coreys general knowledge that everyone should have heard of?