So if you're a guy, how tall is your dream girl in comparison to you, and vice versa for girls?

I prefer guys who are taller than me but "within reach," if you know what I mean. The reason I ask this is because for some reason, I always find it so funny that guys go around with girls who are shorter than them.. hehe but that's because I'm a girl and don't really understand attraction from a male's perspective. Why do guys like shorter girls, and are there any guys out there who prefer taller women, or at least women of the same height?