Despite celebrity appearances , Harbaugh was the real star of the Wolverines show that former coach Lou Holtz predicted will be copied in years to come by other schools .
Michigan football coach Jim Harbaugh talks to fans at the Signing With the Stars spectacle in Ann Arbor .
Despite celebrity appearances , football coach was the real star of the Wolverines show that former coach Lou Holtz predicted will be copied in years to come by other schools .
Michigan football coach Jim Harbaugh talks to fans at the Signing With the Stars spectacle in Ann Arbor .