In the first season and part of the second as well, when Miley speaks you can plainly hear that she has some kind of retainer or the like in her mouth. However she must have gotten it removed by the last half of season 2, because you can no longer hear it when she talks. It seems to be more prevalent when she's "Miley" and not "Hannah" but it's also more audible in some episodes than others.

The title of every episode is a reference to a song. For example, "Everybody was Best Friend Fighting" refers to "Everybody was Kung Fu Fighting" and so forth.

In the Halloween episode, while Miley is telling Lilly how bad her cousen is, Lilly says, "Come on, the next thing you're going to tell me is that she sees dead people." In real life, Emily Osment's brother (Hailey Joe Osment) played the boy in "The Sixth Sense" who said "I see dead people."