Championship droughts for this set in the playoffs:
2016-New England Patriots (defending champions)
2009-New Orleans Saints
2008-Pittsburgh Steelers
1999-St. Louis/Los Angeles Rams
1995-Carolina Panthers & Jacksonville Jaguars (neither has won a championship)
1969-Kansas City Chiefs (Super Bowl IV champions against Minnesota)
1966-Atlanta Falcons (not having won a championship, 2 Super Bowl appearances including last year’s)
1965-Buffalo Bills-(AFL Champions that season, last Super Bowl appearance was XXVIII against Dallas)
1961-Houston Oilers/Tennessee Titans-(AFL champions that season, franchise has never appeared in a Super Bowl).
1961-Minnesota Vikings (never having won a championship, last Bowl appearance was in Super Bowl XI in 1976 against Oakland)
1960-Philadelphia Eagles (1960 NFL champions against Green Bay Packers, last Bowl appearance was in Super Bowl XXXIX against New England Patriots).
Super Bowl XXXIV was between the National Football Conference (NFC) champion St. Louis Rams and the American Football Conference (AFC) champion Tennessee Titans to decide the National Football League (NFL) champion for the 1999 season. The Rams defeated the Titans by the score of 23–16, capturing their first Super Bowl win and first NFL championship since 1951. The game, played on January 30, 2000 at the Georgia Dome in Atlanta...
The Titans were in Super Bowl XXXIV vs. the Rams. They lost by literally one yard.