I've been trying to figure all this out for a LONG while.
Funnily enough, *all four* people in my class at school are INTJs... my Rhetoric teacher tested us, and when we got the results, she (an ESTJ) was VERY afraid
As for me, I'm the only one with real, serious interest in music and visual art (that I know of... 2 of the others are writers and one is a dancer). This facet of my personality is hard for me, because I like to be proficient at everything I do... I'm not, but I like to be... anyhow, I try to get over that OCD, pedantic, perfectionist part and just live with it all. You can't get bogged down by all that when you're in the middle of creating, at least when there's no "undo" button.
I love painting, not necessarily anything real. Photography and videography are passions of mine, and I love putting together "music videos" (basically, silent movie clips to music), which combines the audio/visual.
I play the pennywhistle (aka tin whistle), and I'm teaching myself the piano. Piano lessons went too slowly for me, and never taught me to play any of the songs I WANTED to know. So I'm starting over. I also sing. Italian is a favorite
...I do write little parodies and funny poems. Often. And they always rhyme.