Video: The 10 Most Popular 'Glee' Performances

 

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3. Teenage Dream

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When Kurt (Colfer) transferred to the all-male private school Dalton Academy due to bullying at McKinley early in season two, Gleeks were less than thrilled at the idea of their most fabulous New Directions member getting little time in the spotlight. But when "Glee" fans saw Kurt's new singing group, the Warblers, take on Katy Perry's "Teenage Dream" with crushing a capella harmonies, we thought, "New Directions? Who?" The Warblers, led by the dreamy Darren Criss, have shined brightly on the show ever since their first showing with "Teenage Dream," which reached No. 8 on the Hot 100 back in Dec. 2010, but no performance has stood up to the group's original appearance.

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