The internet is losing it's shit tonight about the plausibility of there being a parallel universe because of the spelling of Berenstain Bears. Several people are claiming that they've always known the spelling to be Berenstein Bears when the series is actually spelled Berenstain and supposedly always has been.
http://www.vice.com/read/the-berensteain-bears-conspiracy-theory-that-has-convinced-the-internet-there-are-parallel-universes
I never grew up with this series so I'm out on this one.