If there's one bet worth getting on, its the "under/over" total points on the Superbowl. The normal range is under or over 34.5 points. Always bet OVER.
Its interesting to look at Superbowl history. The first two had total points over 34.5. The next seven were all under. The next 30 were all over (would have been some winning streak if you could get on during those years!). In the last three years, its been two under and one over. Both games that finished under had 31 total points.