I typically find someone who is logical and knowledgable very interesting. I am a huge Scifi fan so if you're into that, you have bonus points. (:
Music: Panic! at the Disco, Fall Out Boy, Third Eye Blind, Bob Dylan, Grimes.
Books: Harry Potter, Beautiful Creatures, Hunger Games.
TV: It's Always Sunny In Philadelphia, Spaced, Law and Order SVU, Sherlock, Doctor Who, American Horror Story, and Supernatural.