Glee’s Guilty Pleasure Song List image

Secret favorites.

On this week’s episode of "Glee," the New Directions gang will take on some of the most iconic guilty pleasure songs of all time.

The list of hits includes "Wannabe" by the Spice Girls, "Wake Me Up Before You Go-Go" by Wham, "Copacabana" by Barry Manilow, "Against All Odds (Take A Look At Me Now)" by Phil Collins, "My Prerogative" by Bobby Brown, "Creep" by Radiohead, and "Mamma Mia" by ABBA.

Glee’s "Guilty Pleasures" episode airs March 21.

For a peek of what else is happening at McKinley this month, read Soaps.com’s Glee March Spoilers and read about Taylor Swift’s fan mail fiasco.

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All photo credits: Fox

- Hollie Deese