What one thing do you feel you're an expert in?

I am a true expert at Friends (the TV show) trivia. During high school and my first year of college, I was ill a lot. I watched a lot of movies and watched a lot of reruns. One of the shows that I watched more than anything was Friends. I know every episode, I can do most of the episodes by heart. I know everything that happened on that show. To most, its pathetic. I'm 21 years old. The show came on the air when I was 8. How do I know everything about that show? But when stuck in the situation that I was in, I could only turn it into something positive. I instead learned to truly love television for what it really was. A large group of individuals working together to create a 30/60 minute piece of entertainment that allows the average individual the opportunity to break away from their life. It allows the average person to step out of reality for that period of time and forget all the crap that is going on in their lives and instead become involved and concerned with how Ross and Rachel will ever truly be together. It was the same with films. I truly began to love them for what they were. Not just a piece of entertainment, but a piece of art. If it were not for that period in my life, I wouldn't be at the University that I am now, studying film, learning how to create films for myself, to hopefully be able to take my education and create something that one day, a 15 year old, home sick from school can truly enjoy the way I did.