I love writing or watching anything that is science fiction or fantasy. 
Something out of the ordinary and not being based on real life situations. 

Maybe a story about an individual with an uncontrollable power.
Time travelling scenarios. I'm not talking about the "baby" disney movies. 
I'm talking about Steins;Gate((By FAR my Favourite anime. I recommend it highly to Sci-Fi lovers)) type of ordeal.

Watching or writing about something that's beyond explanation, and the creator has to find logic to explain it is fascinating.