If you are trying to be a purist and have as little info about BioShock Infinite before playing the game proper, you don't have anything to worry with the following video. Unless you really care about a small scene were Elizabeth tries to get Booker to dance with her and very basic level scenes. For the most part, the whole video focuses on the voice actor, motion capture and the AI that went into making her. It also has a small bit about the real woman who has brought Liz to life in the ads and online cosplay.

If anything, have a watch just to help pass the next week. Gods, March 26^th can't get here fast enough.