Mine have varied over time. Music has been a constant, always listening and often playing. It's tough as I get songs stuck in my head, and I mean really stuck, and it's a bit of a problem.
I was really into plastic modeling for a few years; mostly aircraft. That was lots of fun and very artistic, I felt. I'm super into auto racing now; formula 1 but also GT cars and I really enjoy German automobiles. Mixed martial arts, enjoy watching it very much (I think it's an amazing sport). I really enjoyed the tour de France too. Now I'm reading a lot about autism spectrum and Asperger's, and well as other non-fiction. I love films and quality TV programming too. And I love animals, my cats and my outdoor bird community. Oh, and medicine/science, and history/philosophy of science.
So there is some continuity, but also variety. But my interests are always quite "intense."
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Nothing witty here...