^Any good fantasy world can make you feel this way (and the best inspire you to write your own fantasy worlds...or fanfiction
). In fact, the popularity of many fantasy novels, especially children's fantasy, is the character arc of transforming from mundane to the magical (this film handled the transformation quite well, especially the slow breakdown of the human body as Jake slowly becomes more and more Na'vi). (Of course, there are many good
medias res fantasy worlds as well.)
Conversely, this transformation can be horrible, as seen in
District 9 just a few months previous.