People You Somehow Find Hot

I'd like to discuss the phenomenon of people (celebrities in this case, so that we can all know who we're talking about) that you find yourself attracted to, yet you can't understand why.

For some reason I find Paul Giamatti, Leonard Nimoy and Terry O'Quinn sexy (well, Terry's less of a mystery, but still). I've noticed that a lot of girls, including Angelina Jolie, have admitted to crushing on Leonard Nimoy... yet, clearly, he is not "handsome" in the traditional sense.

Do any of you have crushes that you have a hard time understanding?