Regarding passions, hobbies, preferences, etc, I've come to believe one thing: everybody's a geek about something. It's just that some areas, like sports, fashion, cars, celebrities, are more socially acceptable. But, knowing a lot about the things you're passionate about is awesome, and I'm glad folks get excited.
So, while I think it's only fair that most informed people own the geek title, I still think Julianna's concept map is tops.
Click here to see it in all its high-resolution glory: Geek Map [Julianna Brion]