I love passionate, even obsessive, people. Why just do something? Be meticulous, unwavering and dedicated. Why just consider a subject? Devote yourself to it. It is so easy to be lukewarm and milquetoast, I have to remind myself to indulge in passionate interest.
Lately, I've run across two people who create works of art (multimedia and culinary) from their passion. Maira Kalman is in love with Abraham Lincoln and Anthony Mangieri is clearly dedicated to the pursuit of perfect pizza.
Their interest and wonderful insanity is contagious.