For me it has to be 1993 Ohio State for a number of reasons:
First, that was my freshman year at Ohio State so it was the first cfb team that I saw a lot of in person.
Second, that season really marks the beginning of a still ongoing 25+ year stretch of Ohio State generally being a top team. Consider, in 1993 the Buckeyes finished only #11. Looking back, that isn't great because in the 25 years since (1994-2018) the Buckeyes have finished in the top-10 17 times. At the time, however, they hadn't finished ranked higher than that since 1986.
Prior to 1993 the Buckeyes hadn't really been a NC contender in my living memory, at least not a very serious one. Back then a second loss was almost always the end of any NC hopes. Ohio State's second loss prior to 1993:
- 1992: Oct 10 to ILL
- 1991: Nov 2 to Iowa
- 1990: Oct 6 to ILL
- 1989: Oct 7 to ILL
- 1988: Oct 1 to ILL
- 1987: Oct 31 to MSU
- 1986: Sep 13 to Washington
- 1985: Nov 16 to Wisconsin
- 1984: Oct 27 to Wisconsin
- 1983: Oct 15 to ILL
- 1982: Oct 2 to FSU
- 1981: Oct 10 to Wisconsin
- 1980: Nov 22 to Michigan
Woody's last great team was in 1975. They slaughtered UCLA in early October in Pasadena and won in Ann Arbor to finish the regular season 11-0 and ranked #1 but then lost a rematch against UCLA in the RoseBowl to barely miss out on an NC. I know these things from books and google because I was born in 1975 so I obviously have no recollection of that season. Woody's last three years (1976-1978) were not very good.
In Earle Bruce's first year, 1979, Ohio State finished the regular season 11-0 and #1 then lost by a point to USC in the Rose Bowl. I'm sure I "watched" the game in the sense that I know my dad watched and I'm sure I was in the living room but I was four years old. I do not remember the 1979 season or the 1980 RoseBowl.
The next seven years of Earle Bruce's tenure the Buckeyes finished with three losses every year. Those seasons (1980-1986) I was 5-11 years old. I have memories from that era. I remember the Rose Bowl after the 1984 season but I wouldn't have been able to tell you what year it was without looking.
1987-1992:
Earle Bruce's last year (1987) was bad, the only redeeming thing being a major upset of the Wolverines. Cooper's first year was a sub .500 disaster and his next four (1989-1992) included two unranked finishes along with a #21 and a #18.