Their reality is collapsing around them and Sam is hitting on a waitress?!? Yes. Watch this funny clip from the Supernatural episode "Clap Your Hands If You Believe."
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Fairies? Oh yes, fairies. They play a key role in this Supernatural role, as humorously previewed here for the installment "Clap Your Hands If You Believe."
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Sam is intent on proving that he's still Sam on the episode "All Dogs Go to Heaven." In this clip, the brothers discuss their latest mission, which was given to them by Crowley.
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"I've done some shady stuff, but I am not doing this." What is Dean referring to with these words? Watch this preview for "All Dogs Go to Heaven" and get an idea.
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Castiel and Dean try to diagnose Sam in this clip from "Family Matters." They aren't optimistic about his chances once they hear he hasn't been sleeping. At all.
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Against his better judgment, Dean gets convinced to accompany Sam on a hunting trip this week. Get a look at how it goes in this preview for "Family Matters."
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Dean isn't very happy with Castiel in this clip. The scene is courtesy of the show's 10/29/10 episode, "You Can't Handle the Truth."
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Why are so many people killing themselves? That's the question at the center of this Supernatural episode, as previewed here.
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Supernatural Quotes

You betrayed me? No one in the history of torture's been tortured with torture like the torture you'll be tortured with.

Crowley

Hey, you leave my baby alone! She's got nothing to do with this!

Dean