Being John Malkovich is a quintessential movie when it comes to the exploring of alternate realities and parallel universes. Much like Donnie experiences a surreal vortex, in this film, puppeteer Craig (John Cusack) discovers a tunnel at his boring job that leads him into the mind of actor John Malkovich. This portal leads to a transformative experience both for Craig and the people who surround him, and it gets very weird (in a good way).
Watch Being John Malkovich on Amazon.