I love number 10 and number 3. My original short stories (such as they are) always, always feature a character who is unbearably hot and who is as studious/adventuresome/compassionate as I'd like to be. And, while I don't always have a lesbian or gay character, in my mind, everyone is up for everything.

Personally, I think that if you're writing young adult fiction, number 6 is a great recurring theme to have. Seriously. Or not seriously, as the case may be.