And what's so stupid about this Harbaugh thing is they are playing Maryland who has been terrible after their hot start to the season. I said it in another thread, but a student at Michigan could coach them to a win this weekend against Maryland.
And as for unbeaten teams that's a damn good question. But if you take all of FBS, you have the following unbeatens still, which I imagine may be the most at this late in the season.
Georgia 10-0
James Madison 10-0
Washington 10-0
Liberty 10-0
Michigan 10-0
Ohio State 10-0
Florida State 10-0
And to take it a step further, look how many one-loss teams there still are too
Tulane 9-1
Louisville 9-1
Texas 9-1
Toledo 9-1
Oregon 9-1
Alabama 9-1