I have to mention my six year old brother. It's fun to just watch him watch anime. He enjoys dragon ball and stays up very late to watch Toonami (On adult-swim). His favorite Ghibli film is Ponyo. He will usually annoy me with different lines he hears from the movie such as "Ponyo loves Sosuke!" and screaming "HAAAAAAAM!"
Somehow he knows Ghost in the Shell was an anime as he mentioned that for the new film here in the U.S.
He also likes your typical kid anime like Pokemon, Yokai watch, and Beyblade.