I haven't even got to play the Bioshock demo yet and the folks over at Games Radar are already digging for easter eggs:
Drinking too many alcoholic beverages in BioShock will cause a temporary blurriness to be added to your vision, and we can only assume that our avatar is more than A-ok with this – who couldn't use a drink while stuck in a place like rapture? Do everyone a favor and mix up a highball, re-start the demo and down some of that whiskey sitting in the last toilet in the women's room.
Be sure to read the rest of the article for more cool goodies including a hidden "hard" mode for the masochists among us.