I was out with friends last weekend, and the question came up of which actors should be cast to play live-action versions of an animated TV show. This is, of course, a fairly popular pastime on the internet, and I was taking a look at people's suggestions for the show my friends were discussing, and a variety of others. Based on this research, I propose the following:
"In any fan-discussion of casting actors for a live-action version of an animated movie or TV show, the actors proposed to play young characters, especially those in high-school, will look far too old, and those cast to play older characters will look far too young."