WIth Penn State's win over OSU on Saturday, there could be a three-way tie for the division title if Penn State runs the table and OSU beats (dare I say "upsets") Michigan in the game. The conference rules for tiebreakers are here - http://www.bigten.org/sports/m-footbl/archive/081011aaa.html.
Bottom line - the fifth tiebreaker of overall winning percentage would knock out Penn State and it would then revert to the Michigan-Ohio State head-to-head winner. If Penn State had defeated Pitt, then it would have fallen to the final tie breaker - a random draw. The random draw was news to me, I expected it to be based on rankings.