“Saturday Night Live’s” Chris Kattan has signed to do Nora Ephron’s “Numbers” with John Travolta, Tim Roth and Lisa Kudrow. Kattan will play Kudrow’s ex-boyfriend, hired by Travolta’s character to scam lottery earnings, eventually becoming his scapegoat.

Kattan is making regular trips to the bigscreen, expanding his resume with the current WB release “House on Haunted Hill” and the upcoming “Monkey Bone” from Fox Animation Studios. He previously co-starred with fellow “SNL”-er Will Ferrell in Par’s “A Night at the Roxbury.” Kattan is repped by Endeavor.

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Tricia Vessey (“Town and Country”), Jonathan Jackson (“The Deep End of the Ocean”) and Cillian Murphy (“Sunburn”) are set to play three young patients of a psychiatric hospital in the as-yet-untitled project for Irish helmer John Carney (“November Afternoon”).

Formerly referred to as the “Smiling Suicide Club,” from scribe Daniel James, pic focuses on suicidal patients who embark on a journey of self-discovery while held within the confines of their therapy treatment center.

Universal-based Hell’s Kitchen principals Jim Sheridan and Arthur Lappin will produce. Ed Guiney will also take a producer credit.

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Jonathan Brandis joins the Bubble Factory’s teen thriller “A Fate Totally Worse Than Death” starring Julie Benz, Monica Keena and Christopher Lloyd. John Kretchmer makes his directorial debut on the pic about high school girls who begin to age prematurely.

Brandis was most recently seen in Miramax’s “Outside Providence” and will next appear in Ang Lee’s “Ride With the Devil.” He is repped by William Morris and Diane Roberts of Shelter Entertainment.