An underlying trait I've found throughout my entire life is that I like to give. The thing I've found most gratifying is helping or giving to those close to me. In a relationship this translates to wanting to provide for or make someone else very happy. Not to say gold diggers apply, but I simply find it makes me happy to make others happy.
As for hobbies and interests keeping fit/healthy is definitely up there for me. I love the outdoors, through hiking, biking, swimming, camping, or a motorcycle. I also used to do ballroom and latin dance for about 5-6 years. I taught myself how to play piano and guitar; don't claim to be good at either, but can get by. I like cooking all different types of cuisine.
Movies: Gattaca, True Romance, Inglorious Basterds, City of Angels, American Gangster & History X, Watchmen, Serenity
TV: Firefly, Dexter, Breaking Bad, Battlestar Galactica, Archer, Family Guy, Simpsons, Californication, Boardwalk Empire
Music: Beetles, Shins, Glitch Mob, Deadmau5, Beethoven, Eagles, Fray, Crystal Method, Delirium, My Chemical Romance, Daft Punk, Empire of the Sun, La Roux, One Republic, Thievery Corporation, The Xx
-Biking/Cycling/something physical on occasion
-Sunrise - Regardless of mood at the time, or for that matter how early it is, I always find looking at a sunrise brings a smile to my face.
-A well made meal - While I can eat simply most of the time, I like to cook and eat and find a certain appreciation in a well made meal.
Four things so far; apparently there's a lot I can do without?
As for subject matter, I try to be rounded - biology, human nature, history, food/cooking, human function and form (martial arts, medicine, massage).