Alabama lost only three games. They were to USC in 1978, who I believe shared the National Championship with them, Notre Dame in 1980, who lost to Georgia in the Sugar Bowl that year playing for the National Championship, and Mississippi State in 1980.
But yes, that run in 1980 was remarkable for MSU. They beat Auburn, Bama, LSU, and Ole Miss all in a row and all in Jackson. That Egg Bowl was the highest attended Egg Bowl in Mississippi at the time, and it may still be.
As mentioned, against Auburn, we had a goal line stand to win the game, and Auburn had James Brooks, who played in the NFL for awhile.
Of course, Alabama was #1 and invincible, and that 80 team pulled off the biggest win in school history. My favorite story from that game was Johnie Cooks daring the Bear to go for it on a fourth and one, the Bear going for it, and MSU stopping them.
Then against LSU, we put up 55 including a Glen Young kickoff return that was beautiful. They showed the highlight of that on the scoreboard this past weekend and what shocked me was the amount of empty seats at the Vet after we beat Bama.
Finally, the Egg Bowl, Johnie Cooks stopped John Fourcade on a fourth and one and two plays later, John Bond runs 60 yards for a TD. Ole Miss comes back and takes the lead, but MSU went ahead on a Bond pitch to Micheal Haddix to give State the go ahead score and the win.