1) Tell you why I friended you. 2) Associate you with a song/film. 3) Tell a random fact about you. 4) Tell a first memory about you. 5) Associate you with a character/pairing. 6) Ask something I've always wanted to know about you. 7) Show you my favourite user pic of yours. 8) In retort, you must spread this disease in your LJ.
Firstly, I'm only going to do the first five or so (unless you're later than that and you're really interesting, or I'm really trying to avoid starting something else). Secondly, I'm not too hot on songs and films, so you might want to manage your expectations about question two. Finally, you don't really have to do that number eight thing if you're disinclined so to do.