I have yet to see that episode. But from googling it, I can only guess that the Glee Clubbers are teaching the Super-bowl team how to dance and sing a mash-up of Thriller and Heads Will Roll. Meanwhile, Coach Sylvester is leading the Cheerios to regionals, and we get some laughs from Sue when she chats with other competetive coaches. But that's just a guess.
Here is the complete resume:
THE GLEE CLUB SCORES A TOUCHDOWN ON AN ALL-NEW "GLEE" FOLLOWING "Super Bowl XLV"
SUNDAY, FEBRUARY 6, ON FOX - AIRING ON A SPECIAL DAY AND TIME
Another ALL-NEW episode airs on TUESDAY 2/8/11 at 8pm ET/PT
Mr. Schuester and Coach Beiste devise a plot to bring together the warring glee club and football team factions. Meanwhile, Sue, desperate to win Cheerleading Nationals, launches a dangerous plan to bring home a trophy, and the kids of New Directions tackle Michael Jackson's iconic hit "Thriller"
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Santana, Brittany, and Quinn quit the cheerios, causing Sue to lose the championships, which later leads to Sue's attempts to committ suicide. Also, The following songs are sung: Thriller/Heads Will Roll, Bills Bills Bills, Need You Now, and Sha's Not There.
the glee Superbowl episode is still only an hour. but its not at its usual time, it's from nine to ten at night.