Mercedes makes her return to McKinley High on Glee. "Wonder-ful" is the 21st episode of the show's fourth season.
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Jessica Sanchez appears here on Glee. The American Idol finalist is making her acting debut.
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Jessica Sanchez debuts here on Glee. It's a scene from the episode "Lights Out."
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Blaine and Sam have a few questions for Becky. This is a scene from the Glee episode "Lights Out."
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The "New Directions" rehearse for their performance at Regionals on Glee. "Sweet Dreams" is the 19th episode of the show's fourth season.
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Katey Sagal poses here on the set of Glee. She will portray Artie's mother on the Fox musical comedy.
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The New Directions gather around in this moving scene from Glee. It's from the episode "Shooting Star."
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Brittany receives a group hug in this scene from the Glee installment "Shooting Star."
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Sam sings to Brittany in this sweet Glee scene. It is courtesy of the episode "Shooting Star."
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Step back, Ryder! Jake helps his friend out in this scene from Glee.
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Will confers here with Coach Beiste. This is a photo from the Glee episode "Shooting Star."
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Sam chats it up here with Brittany. This is a scene from "Shooting Star."
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Glee Quotes

[to Kurt] You know, these Mounds bars are delicious, but you have to eat them. If you just hold them in your hand hoping that you might get to eat them one day, they're going to melt and you'll look like somebody just pooped in your hand. Don't let waiting for things to maybe work out with Blaine turn you into the guy who looks like somebody just pooped in their hand.

Brittany

I just want somebody to love me.

Quinn