A man known for pursuing much younger women finds his perspective shifting during a stay at a playwright’s home in the Hamptons. Jack Nicholson portrays this character, with Diane Keaton as the playwright. Amanda Peet appears as her daughter, Frances McDormand as her sister, and Keanu Reeves as a physician who lives nearby. Nancy Meyer penned and directed "Something's Gotta Give" (2003), delivering a diverting rom…