25 years ago today (1/26/97), back when the Packers played the Patriots at the New Orleans Superdome for Super Bowl XXXI, the halftime show was kind of a big deal but no Lady Gaga, Katy Perry, The Weeknd, or Nipplegate extravaganza. Back then it was so simple as ZZ Top, James Brown and The Blues Brothers took the 50-yard line to entertain the masses. Relive this “unsurpassed” blues and soul revue…