MADONNA WITH M.I.A. (2012)

The Material Girl may have been the headliner, but it was M.I.A. who made headlines the minute she shot up her middle finger during Super Bowl XLVI's halftime entertainment. Joining Her Madgesty and Nicki Minaj on Madonna's new single, ''Give Me All Your Luvin','' the rapper flipped off the biggest halftime audience ever. Madonna deemed the flip slip as ''such a teenage, irrelevant thing to do'' — a debatable dismissal considering that her own performances of ''Vogue'' and ''Like a Prayer'' (not to mention guest appearances by LMFAO, Cee-Lo Green, and Cirque du Soleil) were scarcely part of the conversation minutes post-show thanks to that one extended digit.