Now this is interesting. Reports are coming in that once you finish the PlayStation 3 version of BioShock, you unlock a few things in the extras menu. It would appear that one of those things is a teaser trailer for BioShock 2: Sea of Dreams.

The trailer shows a grown up little sister holding a big daddy plush toy. She is standing on a beach looking out into the ocean. Check out the trailer below.  I personally can't wait.  BioShock was an amazing game.