This is why I love the Internet. You guys are so friendly and nice to a total nub like me. ^^
Okay. Fandoms? You really want the list? *has scared away more than one person with this... as it's rather long and fangirly...*
LOTR, Harry Potter, Doctor Who, Firefly/Serenity, Discworld Doctor Horrible's Sing-Along Blog, Axis Powers: Hetalia, Death Note, FullMetal Alchemist, Sherlock Holmes, the Young Wizards books, the Pern books, Labyrinth, MirrorMask, the Dark Crystal, Redwall, Miyazaki movies (Totoro, Howl's Moving Castle, + etc.), Alice In Wonderland/The Looking Glass Wars (Hatter Madigan unhhh...), Pixar movies, the Muppets, Ender's Game, the Hyperion Cantos, Vampire: the Masquerade, Dungeons and Dragons, the works of Shakespeare, Dickens, Hugo, and Tolstoy, Mistress Masham's Repose, The Once and Future King, Order of the Stick, Lexx, Romantically Apocalyptic, Iron Man (Tony Stark unhhhh...), The Little Prince, the Earthsea books, and probably a MILLION more that I'm forgetting/skipping for your mental hygiene. :P
I must confess to a guilty and abiding love for Twilight. I also don't know much about Pokemon, South Park, or Durarara, but I ship a few pairings from them. >.>
I ship compulsively- straight, yaoi, and even occasionally yuri. I am also guilty of creating cracky crossovers so bad that even the Department of Crossovers can't make head or tail of them. It's all in RP, so it makes a certain degree of sense at the time, but... I'm also fond of crossing fandoms that SHOULD NOT be crossed, like Sherlock Holmes and South Park. And then shipping characters from the crossed fandoms. Hey, at least I've got an Agent now who can help me fix this, right?