I love sci fi. I grew up on sci fi literature, films and TV. But I'm not the type who would go to Comic Con. I don't think like sci fi is necessarily an Aspie thing, but the way I like it is in a very Aspie way. I care more about the genre itself than a particular show or film. Most people I've noticed are just fans of certain shows, but have no genuine interest in the genre, its history and evolution. I have no interest in talking to those people. They strike me as very dull and boring.
I never have liked anime, but I'm much older than the people who usually are into anime. I think that's more a generational thing than an Aspie thing. I work with kids, and a lot of NT kids like anime too.
Overall, I think there's a lot of people here who are confusing being a fan with having an interest that is related to having Asperger's. Asperger's wires one's brain a certain way--it makes our brains more information-gathering, and that's why we get obsessed with certain things. We seek to gather all the information we can about that subject. That's not the same as being a fan. I've known many people who are Pink Floyd fans, for example. They like to wear the t-shirts, and have Pink Floyd stickers on everything they own. They want people to identify them with that band and they seek out other people who enjoy that music too. It's a social thing for them. But when I was a kid and I was obsessed with Pink Floyd, I wasn't like that. I wanted to know all the data about Pink Floyd. It was an intellectual thing. I could name all the albums in order, then all the songs in playing order, the years they were all recorded, where they were recorded, information about musical equipment, producers, touring, etc. I was more of a Pink Floyd encyclopedia than a Pink Floyd fan. And I can't say at that time I enjoyed their music as much as a regular Pink Floyd fan did. I was obsessed simply because I like a few of their songs, but I wasn't that big of a fan. In fact there was far more Pink Flotd songs I didn't like than ones I did. Some of the albums I flat out hated, but I still had to know all the nformation I could find out about them.
So there is a difference. But suffice to say, I don't think being a fan of sci fi or anime means anything but that you're a fan of sci fi or anime. So fi it seems there's alot of sci fi or anime fans here, it really doesn't mean anything regarding Asperger's. In regards to actual Aspie obsessions, it could be anything--whatever happens to entice your brain.