By nature (if there is such a thing), I lean much more heavily towards the science end. I made a conscious effort to be more "artistic" in my teens, and I've been interested in the interplay between art and science ever since. I can play a half dozen musical instruments (some better than others ;), have tried my hand at techno composition, and write Harry Potter fanfiction for fun. I got halfway through writing a novel-length fanfic before indefinitely putting it on hold to work on the website where it's hosted.
I try not to get too involved with computer programming (it's good not to put all of one's eggs in one basket), but it's been sucking me in since I was 12. I'll normally spend a year or two intensely involved in the subject, learn a few new programming languages (I'm up to about 30 now), then do something else for a couple years. Then something else draws me back in. It's looking like it'll end up being (gasp!) a career for me.