Looked at
http://espn.go.com/college-football/bcs
Seems that the difference is with Oklahoma St. vs. Arkansas. Computers have OSU ranked #3 while the human polls put them #6. Is this a SEC bias? Eh. Could be, could not be. The computer polls seem to love the Big 12 (OSU #3, K-State #5, Oklahoma #6) while the human ones don't (OSU #4, K-State #11, Oklahoma #9). I will say there is a human bias in the BCS.
I have no idea what the algorithms are for the computer polls. All I know is that they strive to eliminate the human bias and try to rank teams on objective criteria. Us humans have all kinds of agendas and biases and whatnot.
But my overall comment is that I'd like to see who the best team is decided on the playing field and not in the minds of the voters or in the bits and bytes of the computers. Like it is now.