This was asked on the USC board, and since I bothered to do the research to post the info over there, I thought I'd list it here also.
Only looking at the AP polls, all these teams started and finished #1:
1936 - Minnesota, first poll taken in Oct., when they were 3-0
1941 - Minnesota, first poll taken in Oct., when they were 2-0
1942 - Ohio State, started 1 in Oct, dropped to #10 finished #1
1943 - Notre Dame, first poll in Oct., when they were 2-0
1945 - Army, first poll taken in Oct., when they were 2-0
1947 - Notre Dame, first poll taken in Oct,. when they were 1-0
(pre-season polls from now on)
1951 - Tennessee
1952 - Michigan St.
1956 - Oklahoma
1965 - Alabama (only after top 3 teams all lost bowl games!)
1974 - Oklahoma (got #1 in AP only due to probation)
1975 - Oklahoma
1978 - Alabama
1985 - Oklahoma
1991 - Miami
1993 - Florida State - thanks to BC nailing ND
1999 - Florida State - led wire-to-wire as you mentioned
Amazing that in 1942 we went from 1 to 10 and back to 1. There used to be a lot more movement in the polls week to week. I think that movement is something we need more of, especially in the first half of the year.
Only looking at the AP polls, all these teams started and finished #1:
1936 - Minnesota, first poll taken in Oct., when they were 3-0
1941 - Minnesota, first poll taken in Oct., when they were 2-0
1942 - Ohio State, started 1 in Oct, dropped to #10 finished #1
1943 - Notre Dame, first poll in Oct., when they were 2-0
1945 - Army, first poll taken in Oct., when they were 2-0
1947 - Notre Dame, first poll taken in Oct,. when they were 1-0
(pre-season polls from now on)
1951 - Tennessee
1952 - Michigan St.
1956 - Oklahoma
1965 - Alabama (only after top 3 teams all lost bowl games!)
1974 - Oklahoma (got #1 in AP only due to probation)
1975 - Oklahoma
1978 - Alabama
1985 - Oklahoma
1991 - Miami
1993 - Florida State - thanks to BC nailing ND
1999 - Florida State - led wire-to-wire as you mentioned
Amazing that in 1942 we went from 1 to 10 and back to 1. There used to be a lot more movement in the polls week to week. I think that movement is something we need more of, especially in the first half of the year.