In your own space, share a book/song/movie/tv show/fanwork/etc that changed your life. Something that impacted on your consciousness in a way that left its mark on your soul.
The X-Files. It's a show that changed the way we do television. It gave me a love of media about the supernatural and conspiracy theories. It started a local social event that's been going on for nearly 20 years.
And one day, I thought: I bet there's fanfiction for this show.
I'd read a little fic previously, for ST:TNG, but just randomly. With TXF, I got onto Usenet, mailing lists, starting writing my own fic, and made friendships that I have to this day.
The X-Files gave me fandom. And I'm thankful every day.