1999 Nebraska
Finished 12-1, ranked #2 & #3, beat four ranked teams and lost only a nailbiter to Texas when half the team had the flu. Came back to spank Texas in the Big 12 Title Game and beat a solid Tennessee in the Fiesta Bowl.
Weirdly enough, that team also lead the NCAA in fumbles lost, but was always good enough to cover for it.
People almost never talk about that team, Solich's best and better than only a handful of Osborne teams.
I remember the 1992 loss to Iowa State, and it wasn't even as close as the 19 - 10 score. Nebraska had zero turnovers and few penalties, but Iowa State just dominated them.
Didn't know we were calling those "hiccups" but in hindsight we now realize good things were on the way.