I would have to say FreudianSlip has intrigued me, though I haven't heard from her or seen her other answers to anybody else so far for a while. And it is not just because of her looks. What she said on her profile page I found interesting/intriguing. I basically have no "favorites" on here, but there are others who do fascinate me for reasons I choose not to discuss, and there is only one who made me really seethe, but I can't remember his username, and I haven't seen or heard from him. He may have been just a "one hit wonder".