Comment and I'll:
1. Tell you why I friended you.
2. Associate you with something - a song, a color, a photo, etc.
3. Tell you something I like about you.
4. Tell you a memory I have of you.
5. Associate you with a character.
6. Ask something I've always wanted to know about you.
7. Tell you my favorite user picture of yours.
8. In return, you must post this in your LJ.
(something taken from deebee)