Rowdy one Hank Williams Jr. is joined by the cast of Bring in 'da Noise, Bring in 'da Funk to update the musical intro for Monday Night Football (ABC, 9 p.m.) this season. An inspired idea, this, one that leads to musing about having other casts from the Great White Way perform team-specific intros. The gang from Chicago could work this week's game pitting da Bears and the Packers. The pride from Cats could purr, "Are you ready for some football?" when the Jaguars, Lions or Panthers play. Pity that neither the Giants nor the Falcons appear on MNF '97—Les Misérables would have been perfect.