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Best/Worst: Pitbull and Christina Aguilera's performance
Despite the apparent lip-syncing by Xtina (really?) and that lame cameo by Aha's Morten Harket at the end (just because it was unexpected doesn't make it any less silly), the duo's performance of the upbeat tune "Feel This Moment" was saved somewhat by their loose, infectious on-stage chemistry and the fact that they actually seemed to be having as good a time as the people in the audience.