As I watch Alcatraz... and being a fan of Fringe... I had a thought. I would love to see a show pop up as new on the TV schedule... then a couple of seasons in have a big reveal that it is tied to another show. Secrets are hard to keep in the modern world. But imagine, if you are a Fringe fan... if 2 seasons in Alcatraz was revealed to be part of the Fringe universe and they tied the prisoner disappearances to other Fringe events. Nobody would see that coming... and it would be a way to bring back people from another series and do some stories if the other series is off the air. Obviously you can't do it with all series.... but sci-fi lends itself well to this sort of thing... Imagine watching any good series for a couple of years then suddenly they tie the world plausibly to another popular series. I don't think that has been done before, has it?