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Sneak peek: 'Glee' does 'Rocky Horror'

our friends at E! Online Looks pretty promising, right? Think this episode, which airs Tuesday at 8 p.m., can top the Britney Spears, Lady Gaga or Madonna episodes? Related content:Should your kids be watching 'Glee'?'Glee' star sorry after GQ photo fallout

our friends at E! Online

Looks pretty promising, right? Think this episode, which airs Tuesday at 8 p.m., can top the Britney Spears, Lady Gaga or Madonna episodes? Related content: