Coupling, Uncoupling, Dissembling, Recoupling - The New York Times To say that Justin Zackham's farce "The Big Wedding" takes the low road doesn't begin to do justice to the sheer awfulness of this star-stuffed, potty-mouthed fiasco directed by the screenwriter of "The Bucket List." This is a movie in which the racket kicked up by various couples "boinking," to use its favorite euphemism, is enough to wake up an entire city. The noisemakers include Robert De Niro and Diane Keaton, playing Don and Ellie Griffin, a successful sculptor and his former wife, who reconnect at the nuptial celebrations of their adopted son, Alejandro (Ben Barnes), and his sweetheart, Missy (Amanda Seyfried). "Boink" is the mildest word these two affluent 60-to-70-something characters use in a screenplay (inspired by the 2006 French-Swiss comedy "Mon Frère Se Marie") that rains vulgarity. Alejandro's parents are in an uproar because his Colombian birth mother, Madonna (Patricia Rae), a strait-laced, conservative Roman Catholic, and his sister Nuria (Ana Ayora) are attending the wedding. Because Don and his longtime companion, Bebe (Susan Sarandon), have never married, he and Ellie feel obligated to put on a charade of happy matrimony to impress Madonna, who doesn't approve of divorce. Don and Ellie's other children, Lyla (Katherine Heigl), who is separating from her husband, and Jared (Topher Grace), a prudish 29-year-old doctor who is saving himself for marriage, rattle around the premises. No sooner does the hot-blooded Nuria lay eyes on Jared than she makes a beeline for him by stripping naked and diving into the pond outside Don's Connecticut manse. The tone of the movie is set early, when Ellie arrives just in time to find a Viagra-wired Don about to give oral sex to Bebe, spread-eagle on a kitchen table. "The Big Wedding" might be diverting if the movie were coherent and its characters had any dimension. But the screenplay is chopped up into smutty sound bites constructed around the notion that casual obscenity delivered by respected actors of a certain age is hilarious. But it's just embarrassing. "The Big Wedding" is rated R (Under 17 requires accompanying parent or adult guardian) for language, sexual situations and brief nudity. The Big Wedding Written and directed by Justin Zackham, based on the motion picture "Mon Frère Se Marie" and the screenplay by Jean-Stéphane Bron and Karine Sudan; director of photography, Jonathan Brown; edited by Jonathan Corn; music by Nathan Barr; production design by Andrew Jackness; costumes by Aude Bronson-Howard; produced by Clay Pecorin, Harry J. Ufland, Mr. Zackham, Richard Salvatore and Anthony Katagas; released by Lionsgate. WITH: Robert De Niro (Don), Katherine Heigl (Lyla), Diane Keaton (Ellie), Amanda Seyfried (Missy), Topher Grace (Jared), Susan Sarandon (Bebe), Robin Williams (Father Moinighan), Ben Barnes (Alejandro), Christine Ebersole (Muffin), David Rasche (Barry), Patricia Rae (Madonna) and Ana Ayora (Nuria).