Check out Charlie Jade. It deals with several alternate universes. Possibly the most interesting thing is, it is a Canada, South Africa production and is filmed mostly in South Africa. I highly recommend you read the Wikki overview unless you want to turn your mind into a pretzel.
http://en.wikipedia.org/wiki/Charlie_Jade
Some very nice film techniques, including color coding the different "verses" ala Traffic. It only lasted one season, although scripts have been written for the second season and it seems to have worldwide distributuion. The theory is, it was too complex for the average viewer.