For the first question, yes I've gotten off looking at myself in the mirror, and looking at my pics and vids. When I look at myself in the mirror its not like I'm attracted to myself, the turn on is more about seeing myself from a perspective that isn't possible any other way. With my pics and vids, I'm interested more in the comments that other people leave than the images myself, but sometimes I admire the images as well.
I don't think its weird or narcissistic, at least not necessarily. I think if you become obsessive about yourself, if you can only get off when looking at yourself, then you are probably becoming narcissistic. But I don't think there is anything wrong or unusual about admiring oneself when it doesn't reach obsession.