Example of an Alternate World

So I have put some great thought into this . . . what could be an example of an alternate reality/universe/ or world.  The best thing that I could think of is very recent but also an idea that has just been remade.  The 2009 Movie Land of The Lost it is a world created of several worlds throughout the many centuries of the world and its past present, and future.  It is a mixtures of many time periods and even another universe/galaxy of aliens combined with earthly things.  I feel that this movie is a great example that most people have and can relate to just because it is a well known and heard of movie.  The director and crew did a great job in combining so many realities and things together.

Land of the Lost trailer:     http://www.youtube.com/watch?v=CiCDnG_AdmA