Who other than Auburn has had three in a 20 year span?
Research. Do it.
Alabama 61, 66, 79. Barely made it.
Teams in the SEC that have had unbeaten seasons since 1950:
Alabama: 1961, 1966, 1979, 1992, 2009 (4) -- All four were NC seasons
Auburn: 1957, 1983, 2004, 2010 (4) -- Two NC seasons
LSU: 1958 (1) -- NC
Georgia: 1980 (1) -- NC
Tennessee: 1998 (1) -- NC
Ole Miss: 1962 (1) -- Nothing. Never had a NC.
Arkansas 1964 (not in SEC)
For comparison purposes?
"Traditional powers"
Oklahoma 5
Penn State 5
Nebraska 4
Ohio State 3
USC 3
Texas 3
Miami 3
Notre Dame 2
Michigan 1
Looks to me like we've got a lot in common with Penn State. Undervalued.