Making a sequel is always tricky. While people may have loved the original film enough to encourage a studio to green-light a sequel, that doesn't always mean that there's enough story to tell to merit a follow-up film. And even if there is, part of what audiences enjoy may be the specific presence of certain people behind or in front of the camera, meaning that if everyone doesn't return, there may be problems.

Consider the coconut -- er, sorry -- consider "Moana 2." The highly anticipated sequel to the 2016 animated film, this latest adventure is serving as Disney's big box-office attempt this Thanksgiving, and it's all but guaranteed to clean up at the box office. With Disney Animation's last title, "Wish," stumbling right out of the gate, there's something comforting in the arrival of something more familiar, like another adventure featuring Moana of Motonui as she once again teams up...