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"Former Happy Endings star Zachary Knighton is joining Parenthood. Knighton has been cast as a teacher at Kristina Braverman&amp;#039;s (Monica Potter) school, who develops into a love interest for Julia (Erika Christensen).   His character will be a part of a major storyline throughout the end of season five. Knighton is best known for playing food-loving romantic Dave Rose in Happy Endings. He will also star in the upcoming Fox comedy Weird Loners, which is about four eccentrics who bond while living in a New York townhouse. It was recently announced that John Corbett was returning to Parenthood as Sarah Braverman&amp;#039;s (Lauren Graham) ex-husband Seth. The Office&amp;#039;s David Denman and Lost star Sonya Walger have also guest starred this season. Parenthood airs on Thursdays at 10pm ET on NBC. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/tv/ustv/news/a549589/happy-endings-star-zachary-knighton-joins-parenthood/>