Christopher Walken, Mia Farrow, Selma Blair, Jordan Gelber, Aasif Mandvi, Justin Bartha, Zachary Booth, and Donna Murphy have all joined the cast of Dark Horse, the latest from writer/director Todd Solondz (Life During Wartime).  THR provides a brief outline for the indie drama:

The film centers on a thirtysomething man (Gelber) in arrested development who lives with his parents (Walken and Farrow), reluctantly works for his father and avidly collects toys. He seeks out a thirtysomething woman (Blair) in arrested development in an attempt to shed the "dark horse" status in his family and finally accomplish something.

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Mandvi plays Blair's "not quite ex-boyfriend," Bartha and Booth are Gelber's more successful brother and easygoing cousin (respectively); Murphy will portray Walken's secretary.  Filming began earlier this week in New York.

Hit the jump for news details on Vanessa Hudgen's role in Journey 2: The Mysterious Island and the teaming of Jessica Lange and Sam Neill for The Vow.

The sequel to 2008's Journey to the Center of the Earth has made the best of a bad situation.  They lost original lead Brendan Fraser, but landed Dwayne Johnson and Michael Caine in quick succession, plus rising star Josh Hutcherson --- who featured in Journey --- to maintain continuity.  Heat Vision reports Vanessa Hudgens is the next to fold in to the increasingly high profile cast of Journey 2.  The former Disney starlet is in final negotiations to play the female lead, "a Pacific Islander who gets swept into the adventure and end up falling for Hutcherson."  The Brad Peyton-directed sequel --- loosely based on Jules Vernes' The Mysterious Island --- tracks the voyage of Hutcherson and Johnson to "a mythical and monstrous island" to find the former's grandfather (presumably Caine).

Lastly, Screen Gems and Spyglass have announced that Sam Neill and Oscar-winner Jessica Lange have joined the cast of The Vow.  The drama stars Rachel McAdams and Channing Tatum, with Michael Sucsy (Grey Gardens) directing.  Inspired by a true story, the drama centers on "a young woman (McAdams) who loses all recent memory in a car accident and struggles to rebuild her identity, while her husband (Tatum) tries to win her heart for the second time."  Rachel McNamee has been cast as McAdams' sister.