I adore Harry Potter (as in, the books), the Redwall series by Brian Jacques, anything by Tamora Pierce and Merry and Pippin (a.k.a. Dominic Monaghan and Billy Boyd).
I ocasionally write Harry Potter, Redwall and Lord of the Rings fanfiction and it's from one of my Harry Potter stories that I get my nickname- 'Callisto Riddle' is the daughter of Lord Voldemort. She was such a Mary Sue that I only wrote one chapter of her story, but I liked her name too much to waste it.
Other fandoms I squee over include the Jenny Sullivan books, anything written by Catherine Webb, LXG, LotR in general, X-Men, Disney, Artemis Fowl and Buffy the Vampire Slayer.
I'm nearly seventeen, and I have no idea whatsoever what I want to do as a career. *shrug*