I know you know all this but: teams that have never won a Super Bowl:
Buffalo Bills - 60, Cincinnati Bengals - 68, Cleveland Browns - 99, Houston Texans - 02, Jacksonville Jaguars - 95, Tennessee Titans - 60, San Diego Chargers - 60, Philadelphia Eagles - 33, Detroit Lions - 30, Minnesota Vikings - 61, Atlanta Falcons - 66, Carolina Panthers - 95, New Orleans Saints - 67, Arizona Cardinals - 20, and the Seattle Seahawks - 76