I have a $459 set of Harry Potter Blu-Ray/DVDs on order, despite already owning two copies of each movie.
I got up at 6am and queued from 7am for the 9am releases of each new Harry Potter book at a bookstore, when Mum walked into the department store next to it and picked up a copy for my uncle from the huge pile, rendering the queuing totally unnecessary.
I've been to midnight movie premieres for Harry Potter and the Deathly Hallows Part I and Part II, as well as The Avengers and in two weeks The Dark Knight Rises.
I saw Harry Potter and the Deathly Hallows, Part II a total of five times in cinemas, only to be outdone recently by The Avengers, which I saw six times.
I catalogued every Pokemon card I own on my computer so that I know exactly which ones from which sets I have. This took about four days to accomplish.
I went to the crappy Australian version of Comic-Con last year, just so I could listen to Amy Acker speak for about an hour. Don't know who Amy Acker is? That's because you're not nerdy enough.
I looked at the trailers for the Dragonball movie a few years back and saw how terrible it looked, then went to see it anyway out of franchise loyalty.
I'm short-sighted and have worn glasses since the age of seven. I also have an inhaler that I took to school with me every single day until I outgrew my asthma.
I consider JK Rowling and Joss Whedon my Gods, and freely admit this in public.