When J.D. is bothered by Elliot and Dan's romantic involvement, Turk encourages him to use the hurt brother excuse to break em up.
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Dan (Tom Cavanagh), J.D.'s brother returns with some depressing news: their father died.
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Molly and Elliot argue on how to handle an ex-drug addict patient of Elliot's.
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Turk and J.D. come up witha new name "Gravelling" where they put themselves in other peoples' shoes.
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Turk and Dr. Cox are stumped on how to remove a light bulb from a patient's bum.
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Heather Graham debuted on Scrubs during season four as Molly, the hospital's new psychiatrist.
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Things don't go as planned at Turk and Carla's wedding and they end up at the hospital, where they actually get legally married.
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A picture of the happy couple, Carla and Turk at their practice ceremony.
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Scrubs Quotes

J.D.: We found you in the park throwing rocks at old couples...
Ted: Why should they be happy!?

J.D.'s Thoughts: Wait, is she in to me? Quick, make a bad joke and see if she laughs.
J.D.: Did you hear the one about the skeleton who couldn't go to the party? He had no body to go with.
Neena: That's really funny!
J.D.'s Narration: Well that's not a fair test - that joke's hilarious.