Crimson And Cream Machine, an Oklahoma Sooners community

You're going to need ESPN Insider to read the whole article, but basically Brian Fremeau of Football Outsiders took a look at how teams performed at home compared to how an average team would do in those scenarios. These calculations used FO's FEI formulas. Anyways, the upshot is that Oklahoma comes in 6th place in terms of "best home field advantage", although it's technically "best home field performance" (2003-2010). First place was, you guessed it, Boise State.

This utilizes the FEI rankings on Football Outsiders, adjusted for the location of the game.