My first love has and always will be zoos, but I've been a geek in several different fields.
I was a stamp collecting geek when I was about 9 or 10 and I used to know all about them and spent all my money on albums and stamps. This listed until I discovered football, and I am still a Stoke City geek, even though I've not seen them play since 1986.
My dad was heavily involved with model engineering in all its forms, so I became a train geek at an early age. He did not like diesel and electric locomotives but I'm not old enough to remember steam traction in everyday use, so my loyalties lie with the trains of the late 70s and 1980s.
I once spent part of a visit to the Welsh Mountain Zoo photographing class 37 diesels on the north Wales main line. An excellent view of the line can be obtained somewhere near the chimpanzees; and that leads me to admitting to being a photography geek, in the mid 1970s I even did my own processing and enlarging.
I used to like to read horror and science fiction books, mainly Stephen King, I got bored about ten years ago. I still enjoy watching the old black and white sci-fi films.
I always preferred Star Trek to Star Wars and I've liked Doctor Who since it was first broadcast in 1963. I think the original series was better than the current series, but that is what I grew up with.
My newest attack of geekiness is Buffy the Vampire Slayer. I saw someone on Mastermind choose the programme for her special subject and I was very displeased when she got two questions wrong. And she called herself an expert.