Have not won since MSU in 2000.
When's the last time a Big 12/Big 8 team not named Kansas won a national title? 1946. And 1988 was the last time a Big 12/Big 8 team other than Kansas even played for a national title. Big 10 obviously hasn't been able to close the deal in the championship game recently, but it's had 5 different programs play for the national title in the last 11 years alone. That's not too bad.