Found some cool stuff about the superbowl ep in early febuary;
The episode is reported to be the most expensive post-Super Bowl episode in television history. Two new football-playing characters will be introduced: Scott Cooper and Strando, who may have an increased role in the series. Additionally, producers are seeking fire breathers, jugglers, and bicycle motocross stunt performers for the episode. Brad Ellis, the series' pianist and one of Glee's musical directors has revealed 500 extras will be involved, as well as the University of Southern California Trojan Marching Band. Series regular Chris Colfer and recurring star Darren Criss were not included in the original draft of the script, but were added by series creator Ryan Murphy in a late revision. Dot-Marie Jones will appear in the recurring role of football coach Shannon Beiste. Guests scheduled to appear include Katie Couric, Gwyneth Paltrow, and Charice in her first appearance as Sunshine Corazon since the second season premiere.
Murphy initially intended the episode to be the second of the season paying tribute to a single band or artist, following the Britney Spears tribute episode "Britney/Brittany", and considered covering songs by Elton John, Prince, The Beatles, Bruce Springsteen or Michael Jackson. Ultimately it was decided that songs by multiple acts would be covered. The episode will feature a mash-up of Jackson's song "Thriller" and another song that is yet to be confirmed. Will also be featured "Meet Me Halfway" by The Black Eyed Peas performance by the rival glee club Vocal Adrenaline, a duet between Rachel (Lea Michele) and Puck (Mark Salling), a song by Lady Antebellum, and a Katy Perry song. And the Dalton Academy Warblers will perform "Bills, Bills, Bills" by Destiny's Child. In early reports relating to the episode, cast member Jane Lynch claimed that Couric and Matthew Morrison (Will Schuester) would perform a dance number to "Tea for Two", Vincent Youmans and Irving Caesar's song from the 1925 musical No, No, Nanette. This rumor was later dispelled by Murphy.
And "Thriller" is gonna be a half time show!!